Exhibit 23.3

                       CONSENT OF INDEPENDENT ACCOUNTANTS


We hereby consent to the incorporation by reference in this Registration
Statement on Form S-3 of our report dated January 24, 2001, except as to Note
18, which is as of February 21, 2001, relating to the financial statements and
financial statement schedule, which appears in Quest Diagnostics Incorporated's
Annual Report on Form 10-K for the year ended December 31, 2000. We also consent
to the reference to us under the heading "Experts" in such Registration
Statement.




PricewaterhouseCoopers LLP

New York, New York
July 6, 2001