Out-of-competition testing on more than 75 horses nominated to the Kentucky Derby Presented by Yum! Brands and Longines Kentucky Oaks, as well as other stakes on the May 2-3 cards at Churchill Downs in Louisville, came back clean, the Kentucky Horse Racing Commission (KHRC) said.

Tests were performed at LGC Science Group, formerly known as HFL Sport Science, in Lexington, Ky., the KHRC said the morning of May 2.

"I am pleased to say that all of the test results were negative," KHRC equine medical director Mary Scollay, DVM, said. "Sampling was performed over the two weeks preceding this weekend's racing. Other racing jurisdictions assisted the KHRC by sampling horses based out of state.

"We believe that out-of-competition testing is critical to the integrity of these events and appreciate the high level of cooperation we have received from horsemen and regulators alike in implementing this program," she added

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