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                                                                    Exhibit 23.1

                       CONSENT OF INDEPENDENT ACCOUNTANTS

We hereby consent to the incorporation by reference in this Registration
Statement on Form S-4 of Quest Diagnostics Incorporated of our report dated
January 24, 2002, except as to Note 18, which is as of February 8, 2002,
relating to the financial statements and financial statement schedule, which
appears in Quest Diagnostic's Annual Report on Form 10-K for the year ended
December 31, 2001. We also consent to the reference to us under the heading
"Experts" in such Registration Statement.


/s/ PricewaterhouseCoopers LLP

PricewaterhouseCoopers LLP

New York, New York
May 13, 2002


