Breeders' Cup: All Equine Drug Tests Negative

Breeders' Cup: All Equine Drug Tests Negative

Blood and urine samples were screened for more than 45 anabolic steroids and hundreds of other prohibited drugs.

Photo: Anne M. Eberhardt/The Horse

All samples collected from horses that ran in the Breeders' Cup World Championships Nov. 2-3 at Santa Anita Park, in Arcadia, Calif., have been cleared by the Kenneth L. Maddy Equine Analytical Chemistry Laboratory at the University of California, Davis (UC Davis), the California Horse Racing Board (CHRB) said Nov. 6.

The samples were couriered to UC Davis Nov. 4, allowing testing to begin within 24 hours of the final Breeders' Cup race, the Breeders' Cup Classic.

All horses underwent pre-race testing for total carbon dioxide levels in blood. Post-race testing was performed for prohibited drugs on the first four finishers in all Breeders' Cup races plus additional random horses selected by the stewards consistent with CHRB protocol. Post-race testing was done on both blood and urine samples. The Maddy Laboratory's standard protocols look for more than 45 anabolic steroids and hundreds of other prohibited drugs.

Beyond expedited processing, Breeders' Cup samples required no special handling from everyday CHRB testing requirements.

In addition to routine testing, 25% of all horses pre-entered in the Breeders' Cup were randomly selected for out-of-competition testing. The out-of-competition samples were drawn and analyzed with the cooperation of national and international racing jurisdictions and laboratories. All out-of-competition samples were cleared prior to the Breeders' Cup.

"The cooperation for the Breeders' Cup's out-of-competition testing program has been wonderful," said Rick Arthur, DVM, equine medical director for the CHRB. "This was not a simple process. Veterinarians in multiple countries and states participated in the sampling process and made sure the samples reached the participating laboratories within the necessary time deadline."

Originally published on

About the Author

The Blood-Horse Staff

The Blood-Horse is the leading weekly publication devoted to international Thoroughbred racing and breeding. Since 1916, the staff of The Blood-Horse has served the Thoroughbred community with the highest standards of journalistic excellence to provide comprehensive and timely editorial coverage and analysis.

Stay on top of the most recent Horse Health news with FREE weekly newsletters from Learn More

Free Newsletters

Sign up for the latest in:

From our partners