    <SEC-DOCUMENT>0001022079-23-000113-index.html : 20230519
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    <ACCEPTANCE-DATETIME>20230519181852
    ACCESSION NUMBER:		0001022079-23-000113
    CONFORMED SUBMISSION TYPE:	4
    PUBLIC DOCUMENT COUNT:		11
    CONFORMED PERIOD OF REPORT:	20230517
    FILED AS OF DATE:		20230519
    DATE AS OF CHANGE:		20230519

    REPORTING-OWNER:

    	OWNER DATA:
    		COMPANY CONFORMED NAME:			PFEIFFER GARY M
    		CENTRAL INDEX KEY:			0001127304

    	FILING VALUES:
    		FORM TYPE:		4
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	001-12215
    		FILM NUMBER:		23941885

    	MAIL ADDRESS:
    		STREET 1:		1007 MARKET ST
    		CITY:			WILMINGTON
    		STATE:			DE
    		ZIP:			19898

    ISSUER:

    	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

    	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>
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    <TYPE>4
    <SEQUENCE>1
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    <DESCRIPTION>EX-24
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