Covance
AOAC INTERNATIONAL Appoints Covance Scientist to Board of Directors

Madison, WI, November 16, 2004 — Covance Inc. (NYSE: CVD) is pleased to announce that Darryl Sullivan, Senior Manager of Food and Drug Analysis, has been elected to the Board of Directors for AOAC INTERNATIONAL. AOAC INTERNATIONAL is a private, not-for-profit association dedicated to the development and validation of analytical methods, the improvement of quality assurance procedures in laboratories, and the professional development of scientists. Sullivan was elected to a voluntary three-year term by AOAC INTERNATIONAL general membership at its annual meeting held in September in St. Louis, Missouri. In his new role, he will work with five other directors and AOAC INTERNATIONAL officers in managing policy and financial matters for the organization.

Sullivan has been an active member of AOAC for 25 years, and has held leadership positions in method validation with AOAC for 12 years. Most recently, Sullivan served as Chair of the Official Methods Board. He is also a Fellow of AOAC, an award given to members with more than 10 years of meritorious service.

Covance, a leader in food and dietary supplement testing for more than 60 years, has supported AOAC INTERNATIONAL for more than 50 years, both by contributing analytical methods for validation and in participating as a laboratory for validating methods. As with Sullivan, Covance also supports AOAC through its employees. Wayne Ellefson, Senior Client Manager, is President Elect of the Midwest Section and is a Fellow of AOAC.

The latest information about AOAC's methods validation programs, training courses, membership, publications, and proficiency testing program can be found at www.aoac.org.

About Covance
Covance, with headquarters in Princeton, New Jersey, is one of the world's largest and most comprehensive drug development services companies with 2003 net revenues of $940 million, global operations in 18 countries, and approximately 6,600 employees worldwide. Information on Covance's products and services, recent press releases, and SEC filings can be obtained through the website in the About Covance area.