Exhibit 23.1

CONSENT OF INDEPENDENT ACCOUNTANTS

We hereby consent to the incorporation by reference in this Registration Statement on Form S-8 of our report dated February 15, 2002 relating to the financial statements, which appears in the 2001 Annual Report to Shareholders of BioReliance Corporation, which is incorporated by reference in BioReliance Corporation’s Annual Report on Form 10-K for the year ended December 31, 2001. We also consent to the incorporation by reference of our report dated February 15, 2002 relating to the financial statement schedules, which appears in/on such Annual Report Form 10-K.

PRICEWATERHOUSECOOPERS LLP

McLean, Virginia
July 8, 2002