<SEC-DOCUMENT>0001022079-19-000185.txt : 20191025
<SEC-HEADER>0001022079-19-000185.hdr.sgml : 20191025
<ACCEPTANCE-DATETIME>20191025162449
ACCESSION NUMBER:		0001022079-19-000185
CONFORMED SUBMISSION TYPE:	S-8
PUBLIC DOCUMENT COUNT:		3
FILED AS OF DATE:		20191025
DATE AS OF CHANGE:		20191025
EFFECTIVENESS DATE:		20191025

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			QUEST DIAGNOSTICS INC
		CENTRAL INDEX KEY:			0001022079
		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-MEDICAL LABORATORIES [8071]
		IRS NUMBER:				161387862
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		S-8
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	333-234328
		FILM NUMBER:		191170172

	BUSINESS ADDRESS:	
		STREET 1:		500 PLAZA DRIVE
		CITY:			SECAUCUS
		STATE:			NJ
		ZIP:			07094
		BUSINESS PHONE:		9735202700

	MAIL ADDRESS:	
		STREET 1:		500 PLAZA DRIVE
		CITY:			SECAUCUS
		STATE:			NJ
		ZIP:			07094

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	CORNING CLINICAL LABORATORIES INC
		DATE OF NAME CHANGE:	19960903
</SEC-HEADER>
<DOCUMENT>
<TYPE>S-8
<SEQUENCE>1
<FILENAME>dgx102419s-8.htm
<DESCRIPTION>S-8
<TEXT>
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<div><a name="s092f9719fed74052b4a34a636e367b06"></a></div><div><div style="line-height:120%;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div></div><div><br></div><div style="line-height:120%;text-align:right;-sec-extract:summary;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;">Registration No. __________</font></div><div style="line-height:120%;text-align:right;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;"><br></font></div><div style="line-height:120%;text-align:center;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;">=====================================================================</font></div><div style="line-height:120%;text-align:center;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;">UNITED STATES</font></div><div style="line-height:120%;text-align:center;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;">SECURITIES AND EXCHANGE COMMISSION</font></div><div style="line-height:120%;text-align:center;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;">Washington, D.C. 20549</font></div><div style="line-height:120%;text-align:center;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;"><br></font></div><div style="line-height:120%;text-align:center;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;">=======================</font></div><div style="line-height:120%;text-align:center;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;"><br></font></div><div style="line-height:120%;text-align:center;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;">FORM S-8</font></div><div style="line-height:120%;text-align:center;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;"><br></font></div><div style="line-height:120%;text-align:center;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;">REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933</font></div><div style="line-height:120%;text-align:center;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;"><br></font></div><div style="line-height:120%;text-align:center;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;">=======================</font></div><div style="line-height:120%;text-align:center;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;"><br></font></div><div style="line-height:120%;text-align:center;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;">QUEST DIAGNOSTICS INCORPORATED</font></div><div style="line-height:120%;text-align:center;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;">(Exact name of Registrant as specified in its charter)</font></div><div style="line-height:120%;text-align:center;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;"><br></font></div><div style="line-height:120%;text-align:center;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;">Delaware</font></div><div style="line-height:120%;text-align:center;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;">(State or other jurisdiction of incorporation or organization)</font></div><div style="line-height:120%;text-align:center;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;"><br></font></div><div style="line-height:120%;text-align:center;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;">16-1387862</font></div><div style="line-height:120%;text-align:center;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;">&#32;(I.R.S. Employer</font></div><div style="line-height:120%;text-align:center;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;">&#32;&#32;Identification No.)</font></div><div style="line-height:120%;text-align:center;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;"><br></font></div><div style="line-height:120%;text-align:center;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;">500 Plaza Drive</font></div><div style="line-height:120%;text-align:center;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;">Secaucus, New Jersey 07094</font></div><div style="line-height:120%;text-align:center;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;">(Address of principal executive office)</font></div><div style="line-height:120%;text-align:center;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;"><br></font></div><div style="line-height:120%;text-align:center;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;">=======================</font></div><div style="line-height:120%;text-align:center;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;"><br></font></div><div style="line-height:120%;text-align:center;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;">AMENDED AND RESTATED QUEST DIAGNOSTICS INCORPORATED</font></div><div style="line-height:120%;text-align:center;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;">EMPLOYEE LONG-TERM INCENTIVE PLAN</font></div><div style="line-height:120%;text-align:center;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;">(Full title of the Plan)</font></div><div style="line-height:120%;text-align:center;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;"><br></font></div><div style="line-height:120%;text-align:center;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;">=======================</font></div><div style="line-height:120%;text-align:center;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;"><br></font></div><div style="line-height:120%;text-align:center;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;">William J. O&#8217;Shaughnessy, Jr.</font></div><div style="line-height:120%;text-align:center;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;">Quest Diagnostics Incorporated</font></div><div style="line-height:120%;text-align:center;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;">500 Plaza Drive</font></div><div style="line-height:120%;text-align:center;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;">Secaucus, New Jersey 07094</font></div><div style="line-height:120%;text-align:center;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;">&#32;(973) 520-2116</font></div><div style="line-height:120%;text-align:center;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;"><br></font></div><div style="line-height:120%;text-align:center;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;font-style:italic;">&#32;</font><font style="font-family:inherit;font-size:11pt;">(Name, address, including zip code, and telephone</font></div><div style="line-height:120%;text-align:center;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;">number, including area code, of agent for service)</font></div><div style="line-height:120%;text-align:center;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;">=======================</font></div><div style="line-height:120%;text-align:left;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;"><br></font></div><div style="line-height:120%;text-align:justify;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;">Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company.&#160; See the definitions of &#8220;large accelerated filer,&#8221; &#8220;accelerated filer,&#8221; &#8220;smaller reporting company,&#8221; and &#8220;emerging growth company&#8221; in Rule&#160;12b-2 of the Exchange Act.</font></div><div style="line-height:120%;text-align:center;font-size:11pt;"><div style="padding-left:0px;text-indent:0px;line-height:normal;padding-top:10px;"><table cellpadding="0" cellspacing="0" style="font-family:Times New Roman;font-size:10pt;margin-left:auto;margin-right:auto;width:84.07407407407408%;border-collapse:collapse;text-align:left;"><tr><td colspan="3"></td></tr><tr><td style="width:48%;"></td><td style="width:5%;"></td><td style="width:47%;"></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="padding-top:2px;text-align:justify;padding-left:1px;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;">Large accelerated filer </font><font style="font-family:Wingdings;font-size:11pt;">x</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="padding-bottom:2px;padding-top:2px;text-align:justify;padding-left:1px;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;">Accelerated filer </font><font style="font-family:Wingdings;font-size:11pt;">o</font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="padding-bottom:2px;padding-top:2px;text-align:justify;padding-left:1px;text-indent:2px;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;">Non-accelerated filer </font><font style="font-family:Wingdings;font-size:11pt;">o</font><font style="font-family:inherit;font-size:11pt;">&#160;</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="padding-bottom:2px;padding-top:2px;text-align:justify;padding-left:1px;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;">Smaller reporting company </font><font style="font-family:Wingdings;font-size:11pt;">o</font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="padding-bottom:2px;padding-top:2px;text-align:justify;padding-left:1px;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;">Emerging Growth Company </font><font style="font-family:Wingdings;font-size:11pt;">o</font></div></td></tr></table></div></div><div style="line-height:120%;text-align:left;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;">If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 7(a)(2)(B) of the Securities Act. &#9744;</font></div><div><br></div><div><div style="line-height:120%;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div></div><hr style="page-break-after:always"><div><div style="line-height:120%;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div></div><div><br></div><div style="line-height:120%;text-align:center;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;"><br></font></div><div style="line-height:120%;text-align:center;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;">CALCULATION OF REGISTRATION FEE</font></div><div style="line-height:120%;text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><div style="line-height:120%;text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">=====================================================================</font></div><div style="line-height:120%;text-align:center;font-size:11pt;"><div style="padding-left:0px;text-indent:0px;line-height:normal;padding-top:10px;"><table cellpadding="0" cellspacing="0" style="font-family:Times New Roman;font-size:10pt;margin-left:auto;margin-right:auto;width:88.88888888888889%;border-collapse:collapse;text-align:left;"><tr><td colspan="5"></td></tr><tr><td style="width:20%;"></td><td style="width:20%;"></td><td style="width:20%;"></td><td style="width:20%;"></td><td style="width:20%;"></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;">Title of Securities to be Registered</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;">Amount to be Registered (1)</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;">Proposed Maximum Offering Price Per Share (2)</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;">Proposed Maximum Aggregate Offering Price (2)</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;">Amount of Registration Fee</font></div></td></tr></table></div></div><div style="line-height:120%;text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">=====================================================================</font></div><div style="line-height:120%;text-align:center;font-size:11pt;"><div style="padding-left:0px;text-indent:0px;line-height:normal;padding-top:10px;"><table cellpadding="0" cellspacing="0" style="font-family:Times New Roman;font-size:10pt;margin-left:auto;margin-right:auto;width:88.88888888888889%;border-collapse:collapse;text-align:left;"><tr><td colspan="5"></td></tr><tr><td style="width:20%;"></td><td style="width:20%;"></td><td style="width:20%;"></td><td style="width:20%;"></td><td style="width:20%;"></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;">Common Stock, Par Value $0.01</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;">8,300,000 Shares</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;">$102.50</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;">$850,750,000</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;">$110,428</font></div></td></tr></table></div></div><div style="line-height:120%;text-align:justify;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><div style="line-height:120%;text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">=====================================================================</font></div><table cellpadding="0" cellspacing="0" style="font-family:Times New Roman; font-size:10pt;"><tr><td style="width:48px;"></td><td></td></tr><tr><td style="vertical-align:top"><div style="line-height:120%;font-size:11pt;padding-left:0px;"><font style="font-family:inherit;font-size:11pt;">(1)</font></div></td><td style="vertical-align:top;"><div style="line-height:120%;text-align:left;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;">Represents the number of shares of Common Stock authorized for issuance pursuant to the Amended and Restated Quest Diagnostics Incorporated Employee Long-Term Incentive Plan (the &#8220;Plan&#8221;).  Pursuant to Rule 416(a) under the Securities Act of 1933, as amended (the &#8220;Securities Act&#8221;), this registration statement on Form S-8 also covers an indeterminate amount of additional shares of Common Stock that may be offered or delivered under the Plan to prevent dilution resulting from any stock dividend, stock split, recapitalization or other similar transaction. No additional registration fee is included for these shares.</font></div></td></tr></table><div style="line-height:120%;text-align:justify;padding-left:48px;text-indent:-48px;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;"><br></font></div><table cellpadding="0" cellspacing="0" style="font-family:Times New Roman; font-size:10pt;"><tr><td style="width:48px;"></td><td></td></tr><tr><td style="vertical-align:top"><div style="line-height:120%;font-size:11pt;padding-left:0px;"><font style="font-family:inherit;font-size:11pt;">(2)</font></div></td><td style="vertical-align:top;"><div style="line-height:120%;text-align:justify;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;">Estimated pursuant to Rules 457(c) and 457(h) under the Securities Act solely for the purpose of calculating the registration fee based upon the average of the high and low prices reported for the shares of Common Stock on the New York Stock Exchange on October 21, 2019.</font></div></td></tr></table><div style="line-height:120%;text-align:justify;padding-left:48px;text-indent:-48px;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;"><br></font></div><div style="line-height:120%;text-align:center;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;">=====================================================================</font></div><div style="line-height:120%;text-align:center;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;"><br></font></div><div style="line-height:120%;text-align:center;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;">EXPLANATORY NOTE</font></div><div style="line-height:120%;text-align:center;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;"><br></font></div><div style="line-height:120%;text-align:justify;text-indent:48px;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;">This registration statement on Form S-8 is being filed for the purpose of registering an additional 8,300,000 shares of common stock, $0.01 par value per share, of Quest Diagnostics Incorporated (the &#8220;Corporation&#8221;) issuable pursuant to the Plan.  In accordance with Instruction E to the General Instructions to Form S-8, the contents of the </font><font style="font-family:inherit;font-size:11pt;color:#0000ff;text-decoration:underline;">Registration Statement on Form S-8 (File No. 333-162711)</font><font style="font-family:inherit;font-size:11pt;">&#32;that the Registrant filed with the Securities and Exchange Commission on October 28, 2009, are hereby incorporated by reference and made part of this Registration Statement, except that Item 6 thereof is hereby restated as set forth in Item 6 of the </font><font style="font-family:inherit;font-size:11pt;color:#0000ff;text-decoration:underline;">Registration Statement on Form S-8 (File No. 333-207746)</font><font style="font-family:inherit;font-size:11pt;">&#32;that the Registrant filed with the Securities and Exchange Commission on November 2, 2015, which Item is hereby incorporated by reference and made part of this Registration Statement.</font></div><div><br></div><div><div style="line-height:120%;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div></div><hr style="page-break-after:always"><div><div style="line-height:120%;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div></div><div><br></div><div style="line-height:120%;text-align:center;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;">Part II</font></div><div style="line-height:120%;text-align:center;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;">Information Required in the Registration Statement</font></div><div style="line-height:120%;text-align:center;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;"><br></font></div><div style="line-height:120%;text-align:left;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;">Item 8. Exhibits</font></div><div style="line-height:120%;text-align:left;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;"><br></font></div><div style="line-height:120%;text-align:justify;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;">Exhibit Number  &#160;&#160;&#160;&#160;Exhibit</font></div><div style="line-height:120%;text-align:justify;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;">====================================================================</font></div><table cellpadding="0" cellspacing="0" style="font-family:Times New Roman; font-size:10pt;"><tr><td style="width:48px;"></td><td></td></tr><tr><td style="vertical-align:top"><div style="line-height:120%;font-size:11pt;padding-left:0px;"><font style="font-family:inherit;font-size:11pt;">4.1 </font></div></td><td style="vertical-align:top;"><div style="line-height:120%;text-align:justify;font-size:11pt;"><a style="text-decoration:underline;color:#0000FF;font-size:11pt;-sec-extract:exhibit;" href="http://www.sec.gov/Archives/edgar/data/1022079/000102207919000166/dgx063019ex101.htm"><font style="font-family:inherit;font-size:11pt;">Amended and Restated Quest Diagnostics Incorporated Employee Long-Term Incentive Plan (filed as an Exhibit to the Corporation's Quarterly Report on Form 10-Q for the quarter ended June 30, 2019 (Date of Report: July 24, 2019) and incorporated herein by reference) (Commission File Number 001-12215)</font></a></div></td></tr></table><div style="line-height:120%;text-align:justify;padding-left:48px;text-indent:-48px;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;"><br></font></div><table cellpadding="0" cellspacing="0" style="font-family:Times New Roman; font-size:10pt;"><tr><td style="width:48px;"></td><td></td></tr><tr><td style="vertical-align:top"><div style="line-height:120%;font-size:11pt;padding-left:0px;"><font style="font-family:inherit;font-size:11pt;">4.2</font></div></td><td style="vertical-align:top;"><div style="line-height:120%;text-align:justify;font-size:11pt;"><a style="text-decoration:underline;color:#0000FF;font-size:11pt;-sec-extract:exhibit;" href="http://www.sec.gov/Archives/edgar/data/1022079/000102207918000176/0001022079-18-000176-index.htm"><font style="font-family:inherit;font-size:11pt;">Restated Certificate of Incorporation (filed as an Exhibit to the Corporation's Quarterly Report on Form 10 Q for the quarter ended September 30, 2018 (Date of Report: October 24, 2018) and incorporated herein by reference) (Commission File Number 001-12215)</font></a><font style="font-family:inherit;font-size:11pt;">&#32;</font></div></td></tr></table><div style="line-height:120%;text-align:justify;padding-left:48px;text-indent:-48px;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;"><br></font></div><table cellpadding="0" cellspacing="0" style="font-family:Times New Roman; font-size:10pt;"><tr><td style="width:48px;"></td><td></td></tr><tr><td style="vertical-align:top"><div style="line-height:120%;font-size:11pt;padding-left:0px;"><font style="font-family:inherit;font-size:11pt;">4.3</font></div></td><td style="vertical-align:top;"><div style="line-height:120%;text-align:justify;font-size:11pt;"><a style="text-decoration:underline;color:#0000FF;font-size:11pt;-sec-extract:exhibit;" href="http://www.sec.gov/Archives/edgar/data/1022079/000102207919000144/0001022079-19-000144-index.htm"><font style="font-family:inherit;font-size:11pt;">Amended and Restated By-Laws of the Company (filed as an Exhibit to the Corporation's current report on Form 8-K (Date of Report: May 17, 2019) and incorporated herein by reference) (Commission File Number 001-12215) </font></a></div></td></tr></table><div style="line-height:120%;text-align:justify;padding-left:48px;text-indent:-48px;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;"><br></font></div><div style="line-height:120%;text-align:justify;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;">5.1*  &#160;&#160;&#160;&#160;</font><a style="text-decoration:underline;color:#0000FF;font-size:11pt;-sec-extract:exhibit;" href="dgx102419s-8ex51.htm"><font style="font-family:inherit;font-size:11pt;">Opinion of Shearman and Sterling, LLP</font></a></div><div style="line-height:120%;text-align:justify;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;"><br></font></div><div style="line-height:120%;text-align:justify;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;">23.1*  &#160;&#160;&#160;&#160;</font><a style="text-decoration:underline;color:#0000FF;font-size:11pt;-sec-extract:exhibit;" href="dgx102419s-8ex231.htm"><font style="font-family:inherit;font-size:11pt;">Consent of Independent Registered Public Accounting Firm</font></a></div><div style="line-height:120%;text-align:justify;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;"><br></font></div><div style="line-height:120%;text-align:left;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;">24.1*  &#160;&#160;&#160;&#160;</font><a style="font-family:inherit;font-size:11pt;" href="#s092f9719fed74052b4a34a636e367b06"><font style="font-family:inherit;font-size:11pt;">Power of Attorney</font></a><font style="font-family:inherit;font-size:11pt;">&#32;(included on signature page)</font></div><div style="line-height:120%;text-align:left;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;"><br></font></div><div style="line-height:120%;text-align:left;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;">====================================================================</font></div><div style="line-height:120%;text-align:left;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;">*Filed herewith.</font></div><div style="line-height:120%;text-align:left;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;"><br></font></div><div><br></div><div><div style="line-height:120%;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div></div><hr style="page-break-after:always"><div><div style="line-height:120%;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div></div><div><br></div><div style="line-height:120%;text-align:center;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;">SIGNATURES</font></div><div style="line-height:120%;text-align:center;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;"><br></font></div><div style="line-height:120%;text-align:justify;text-indent:48px;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;">Pursuant to the requirements of the Securities Act, the Registrant certifies that it has reasonable grounds to believe that it meets all the requirements for filing a Form S-8 and has duly caused this Registration Statement to be signed on its behalf by the undersigned, thereunto duly authorized, in the City of Secaucus, State of New Jersey, on October 24, 2019.</font></div><div style="line-height:120%;text-align:center;font-size:11pt;"><div style="padding-left:0px;text-indent:0px;line-height:normal;padding-top:10px;"><table cellpadding="0" cellspacing="0" style="font-family:Times New Roman;font-size:10pt;margin-left:auto;margin-right:auto;width:38.51851851851852%;border-collapse:collapse;text-align:left;"><tr><td colspan="1"></td></tr><tr><td style="width:100%;"></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;">Quest Diagnostics Incorporated</font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;height:20px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:justify;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;">By: </font><font style="font-family:inherit;font-size:11pt;text-decoration:underline;">/s/ Stephen H. Rusckowski</font><font style="font-family:inherit;font-size:11pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;</font></div><div style="text-align:justify;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;">Stephen H. Rusckowski</font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;">Chairman, Chief Executive Officer and President</font></div></td></tr></table></div></div><div style="line-height:120%;text-align:left;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;"><br></font></div><div style="line-height:120%;text-align:justify;text-indent:48px;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;">Pursuant to the requirements of the Securities Act of 1933, this Registration Statement has been signed on October 24, 2019 by the following persons in the capacities indicated.</font></div><div style="line-height:120%;text-align:justify;text-indent:48px;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;">&#160;&#160;&#160;&#160;</font></div><div style="line-height:120%;text-align:center;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;font-weight:bold;">POWER OF ATTORNEY</font></div><div style="line-height:120%;text-align:left;text-indent:48px;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;">Each individual whose manual signature appears below constitutes and appoints Michael E. Prevoznik and William J. O'Shaughnessy, Jr., and each of them singly, his or her true and lawful attorneys-in-fact and agents with full power of substitution, for him or her and in his or her name, place and stead, in any and all capacities, to sign this Registration Statement and any and all amendments thereto, including post-effective amendments, and to file the same, with all exhibits thereto, any related registration filed pursuant to Rule 462(b) under the Securities Act of 1933, as amended, and other documents in connection therewith, with the Securities and Exchange Commission, granting unto said attorneys-in-fact and agents, and each of them full power and authority to do and perform each and every act and thing requisite and necessary to be done in and about the premises, as fully to all intents and purposes as he or she might or could do in person, hereby ratifying and confirming all the said attorneys-in-fact and agents or any of them or their or his or her substitutes, may lawfully do or cause to be done by virtue hereof.</font></div><div style="line-height:120%;text-align:center;font-size:11pt;"><div style="padding-left:0px;text-indent:0px;line-height:normal;padding-top:10px;"><table cellpadding="0" cellspacing="0" style="font-family:Times New Roman;font-size:10pt;margin-left:auto;margin-right:auto;width:69.25925925925925%;border-collapse:collapse;text-align:left;"><tr><td colspan="2"></td></tr><tr><td style="width:51%;"></td><td style="width:49%;"></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;">Signatures</font></div><div style="text-align:center;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;"><br></font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;">Capacity</font></div><div style="text-align:center;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;"><br></font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:justify;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;text-decoration:underline;">/s/ Stephen H. Rusckowski                       </font></div><div style="text-align:justify;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;">Stephen H. Rusckowski</font></div><div style="text-align:justify;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;"><br></font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:justify;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;">Chairman, Chief  Executive Officer and President </font></div><div style="text-align:justify;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;"><br></font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:justify;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;text-decoration:underline;">/s/ Mark J. Guinan                                    </font></div><div style="text-align:justify;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;">Mark J. Guinan</font></div><div style="text-align:justify;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;"><br></font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:justify;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;">Executive Vice President and Chief Financial Officer</font></div><div style="text-align:justify;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;"><br></font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:justify;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;text-decoration:underline;">/s/ Michael J. Deppe                                 </font></div><div style="text-align:justify;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;">Michael J. Deppe</font></div><div style="text-align:justify;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;"><br></font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:justify;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;">Vice President, Corporate Controller and Chief Accounting Officer</font></div><div style="text-align:justify;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;"><br></font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:justify;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;text-decoration:underline;">/s/ Vicky B. Gregg                                    </font></div><div style="text-align:justify;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;">Vicky B. Gregg</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:justify;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;">Director</font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:justify;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;text-decoration:underline;">/s/ Timothy L. Main                                  </font></div><div style="text-align:justify;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;">Timothy L. Main</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:justify;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;">Director</font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:justify;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;text-decoration:underline;">/s/ Denise M. Morrison                             </font></div><div style="text-align:justify;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;">Denise M. Morrison</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:justify;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;">Director</font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:justify;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;text-decoration:underline;">/s/ Gary M. Pfeiffer</font></div><div style="text-align:justify;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;">Gary M. Pfeiffer</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:justify;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;">Director</font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:justify;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;text-decoration:underline;">/s/ Timothy M. Ring                                  </font></div><div style="text-align:justify;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;">Timothy M. Ring</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:justify;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;">Director</font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:justify;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;text-decoration:underline;">/s/ Helen I. Torley                                     </font></div><div style="text-align:justify;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;">Helen I. Torley</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:justify;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;">Director</font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:justify;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;text-decoration:underline;">/s/ Daniel C. Stanzione                             </font></div><div style="text-align:justify;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;">Daniel C. Stanzione</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:justify;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;">Lead Independent Director</font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:justify;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;text-decoration:underline;">/s/ Gail R. Wilensky                                  </font></div><div style="text-align:justify;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;">Gail R. Wilensky</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:justify;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;">Director</font></div></td></tr></table></div></div><div><br></div><div><div style="line-height:120%;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div></div>	</body>
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<TYPE>EX-5.1
<SEQUENCE>2
<FILENAME>dgx102419s-8ex51.htm
<DESCRIPTION>EXHIBIT 5.1
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<div><a name="s5d4f2b8a12b64e00a45d245a3cf9104e"></a></div><div><div style="line-height:120%;text-align:right;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;">Exhibit 5.1</font></div></div><div><br></div><div style="line-height:120%;text-align:center;-sec-extract:summary;font-size:11pt;"><div style="padding-left:0px;text-indent:0px;line-height:normal;padding-top:10px;"><table cellpadding="0" cellspacing="0" style="font-family:Times New Roman;font-size:10pt;margin-left:auto;margin-right:auto;width:91.40625%;border-collapse:collapse;text-align:left;"><tr><td colspan="1"></td></tr><tr><td style="width:100%;"></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;font-weight:bold;">SHEARMAN &amp; STERLING LLP</font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;">599 Lexington Avenue</font></div><div style="text-align:center;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;">New York, NY 10022-6069</font></div><div style="text-align:center;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;">+1.212.848.4000</font></div></td></tr></table></div></div><div style="line-height:120%;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><div style="line-height:174%;text-align:right;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;">October 24, 2019</font></div><div style="line-height:120%;text-align:left;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;">Quest Diagnostics Incorporated</font></div><div style="line-height:120%;text-align:left;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;">500 Plaza Drive</font></div><div style="line-height:120%;text-align:left;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;">Secaucus, New Jersey 07094</font></div><div style="line-height:120%;padding-top:16px;text-align:left;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;">Ladies and Gentlemen:</font></div><div style="line-height:120%;padding-top:16px;text-align:left;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;">We are acting as counsel for Quest Diagnostics Incorporated, a Delaware corporation (the &#8220;</font><font style="font-family:inherit;font-size:11pt;font-style:italic;">Company</font><font style="font-family:inherit;font-size:11pt;">&#8221;), in connection with preparation and filing by the Company of a registration statement on Form&#160;S-8 (the&#160;&#8220;</font><font style="font-family:inherit;font-size:11pt;font-style:italic;">Registration Statement</font><font style="font-family:inherit;font-size:11pt;">&#8221;) with the Securities and Exchange Commission (the &#8220;</font><font style="font-family:inherit;font-size:11pt;font-style:italic;">Commission</font><font style="font-family:inherit;font-size:11pt;">&#8221;) under the Securities Act of 1933, as amended (the &#8220;</font><font style="font-family:inherit;font-size:11pt;font-style:italic;">Securities Act</font><font style="font-family:inherit;font-size:11pt;">&#8221;), with respect to 8,300,000 shares of common stock, par value $0.01, of the Company (the&#160;&#8220;</font><font style="font-family:inherit;font-size:11pt;font-style:italic;">Shares</font><font style="font-family:inherit;font-size:11pt;">&#8221;) that may be delivered from time to time pursuant to the Amended and Restated Quest Diagnostics Incorporated Employee Long-Term Incentive Plan (the &#8220;</font><font style="font-family:inherit;font-size:11pt;font-style:italic;">Plan</font><font style="font-family:inherit;font-size:11pt;">&#8221;).</font></div><div style="line-height:120%;padding-top:16px;text-align:left;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;">In connection with the foregoing, we have reviewed originals or copies identified to our satisfaction of the following documents: </font></div><div style="line-height:120%;text-align:center;font-size:11pt;"><div style="padding-left:0px;text-indent:0px;line-height:normal;padding-top:10px;"><table cellpadding="0" cellspacing="0" style="font-family:Times New Roman;font-size:10pt;margin-left:auto;margin-right:auto;width:91.40625%;border-collapse:collapse;text-align:left;"><tr><td colspan="3"></td></tr><tr><td style="width:8%;"></td><td style="width:5%;"></td><td style="width:87%;"></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;">&#160;</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;">(a)</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;">The Registration Statement; </font></div></td></tr></table></div></div><div style="line-height:120%;text-align:center;font-size:11pt;"><div style="padding-left:0px;text-indent:0px;line-height:normal;padding-top:10px;"><table cellpadding="0" cellspacing="0" style="font-family:Times New Roman;font-size:10pt;margin-left:auto;margin-right:auto;width:91.40625%;border-collapse:collapse;text-align:left;"><tr><td colspan="3"></td></tr><tr><td style="width:8%;"></td><td style="width:4%;"></td><td style="width:88%;"></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;">&#160;</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;">(b)</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;">&#160;The certificate of incorporation and by-laws of the Company, in each case as amended to date; and </font></div></td></tr></table></div></div><div style="line-height:120%;text-align:center;font-size:11pt;"><div style="padding-left:0px;text-indent:0px;line-height:normal;padding-top:10px;"><table cellpadding="0" cellspacing="0" style="font-family:Times New Roman;font-size:10pt;margin-left:auto;margin-right:auto;width:91.40625%;border-collapse:collapse;text-align:left;"><tr><td colspan="3"></td></tr><tr><td style="width:8%;"></td><td style="width:5%;"></td><td style="width:87%;"></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;">&#160;</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;">(c)</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;">Originals or copies of such other corporate records of the Company, certificates of public officials and of officers of the Company, and agreements and other documents as we have deemed necessary as a basis for the opinions expressed below. </font></div></td></tr></table></div></div><div style="line-height:120%;padding-top:16px;text-align:left;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;">In our examination, we have assumed the genuineness of all signatures, the authenticity of all documents, certificates and instruments submitted to us as originals and the conformity with originals of all documents submitted to us as copies. </font></div><div style="line-height:120%;padding-top:16px;text-align:left;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;">Our opinion set forth below is based on the text of the Plan as referenced in the Exhibit Index to the Registration Statement. </font></div><div style="line-height:120%;padding-top:16px;text-align:left;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;">Our opinion expressed below is limited to the General Corporation Law of the State of Delaware, and we do not express any opinion herein concerning any other law.</font></div><div style="line-height:120%;padding-top:16px;text-align:left;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;">Based upon and subject to the foregoing and having regard for such legal considerations as we have deemed relevant, we are of the opinion that authorized but not previously issued Shares which may be delivered under the Plan have been duly authorized by the Company and, when (a)&#160;issued and delivered by the Company in accordance with the terms of the Plan and (b)&#160;paid for in full in accordance with the terms of the Plan, will be validly issued, fully paid and non-assessable. </font></div><div style="line-height:120%;text-align:center;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;"><br></font></div><div style="line-height:120%;text-align:center;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;"><br></font></div><div style="line-height:120%;text-align:center;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;"><br></font></div><div style="line-height:120%;text-align:center;font-size:10pt;"><div style="padding-left:0px;text-indent:0px;line-height:normal;padding-top:10px;"><table cellpadding="0" cellspacing="0" style="font-family:Times New Roman;font-size:10pt;margin-left:auto;margin-right:auto;width:91.40625%;border-collapse:collapse;text-align:left;"><tr><td colspan="1"></td></tr><tr><td style="width:100%;"></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">SHEARMAN.COM</font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Shearman &amp; Sterling LLP is a limited liability partnership organized in the United States under the laws of the state of Delaware, which laws limit the personal liability of partners.</font></div></td></tr></table></div></div><div><br></div><div><div style="line-height:120%;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div></div><hr style="page-break-after:always"><div><div style="line-height:120%;text-align:right;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;">Exhibit 5.1</font></div></div><div><br></div><div style="line-height:120%;padding-top:16px;text-align:left;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;">This opinion letter speaks only as of the date hereof. We expressly disclaim any responsibility to advise you of any development or circumstance of any kind, including any change of law or fact that may occur after the date of this opinion letter that might affect the opinions expressed herein. </font></div><div style="line-height:120%;padding-top:16px;text-align:left;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;">We hereby consent to the filing of this opinion as an exhibit to the Registration Statement. In giving this consent, we do not thereby concede that we come within the category of persons whose consent is required by the Securities Act or the General Rules and Regulations of the Commission promulgated thereunder. </font></div><div style="line-height:120%;padding-top:16px;text-align:left;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;">This opinion is rendered solely to you in connection with the above matter. This opinion may not be relied upon by you for any other purpose without our prior written consent.</font></div><div style="line-height:120%;padding-bottom:32px;padding-top:16px;text-align:left;padding-left:360px;text-indent:48px;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;">Very truly yours,</font></div><div style="line-height:174%;text-align:left;text-indent:384px;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"></font><font style="font-family:inherit;font-size:12pt;text-decoration:underline;">/s/ Shearman &amp; Sterling LLP</font></div><div style="line-height:120%;text-indent:384px;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">Shearman &amp; Sterling LLP</font></div><div style="line-height:120%;padding-bottom:32px;padding-top:16px;text-align:left;padding-left:360px;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;"><br></font></div><div style="line-height:120%;padding-top:16px;text-align:justify;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;"><br></font></div><div style="line-height:120%;padding-top:16px;text-align:justify;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;">GEM/mb</font></div><div style="line-height:120%;text-align:left;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;"><br></font></div><div style="line-height:120%;padding-bottom:16px;text-align:left;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;"><br></font></div><div style="line-height:120%;text-align:left;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;"><br></font></div><div style="line-height:120%;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><div style="line-height:120%;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><div><br></div><div><div style="line-height:120%;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div></div>	</body>
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<TYPE>EX-23.1
<SEQUENCE>3
<FILENAME>dgx102419s-8ex231.htm
<DESCRIPTION>EXHIBIT 23.1
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<div><a name="s402baeb9f4bd4d60ba884d65ce3cb923"></a></div><div><div style="line-height:120%;text-align:right;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;">Exhibit 23.1</font></div></div><div><br></div><div style="line-height:120%;padding-bottom:32px;padding-top:32px;text-align:center;-sec-extract:summary;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;">CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM</font></div><div style="line-height:120%;padding-bottom:8px;text-align:left;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;">We hereby consent to the incorporation by reference in this Registration Statement on Form S-8&#160;of Quest Diagnostics Incorporated of our report dated February 21, 2019 relating to the financial statements, financial statement schedule and the effectiveness of internal control over financial reporting, which appears in Quest Diagnostics Incorporated's Annual Report on Form 10-K for the year ended December 31, 2018. </font></div><div style="line-height:120%;text-align:left;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;"><br></font></div><div style="line-height:120%;text-align:left;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;"><br></font></div><div style="line-height:120%;text-align:left;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;">/s/ PricewaterhouseCoopers LLP</font></div><div style="line-height:120%;text-align:left;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;">Florham Park, NJ</font></div><div style="line-height:120%;text-align:left;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;">October 24, 2019</font></div><div><br></div><div><div style="line-height:120%;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div></div>	</body>
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