Exhibit 23.3


                       CONSENT OF INDEPENDENT ACCOUNTANTS
                       ----------------------------------


We hereby consent to the incorporation by reference in this Amendment No. 1 to
the 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 11, 2001