http://www.drf.com/news/article/95809.html
I guess there is some owner responsibility here . . .
An excerpt from the DRF article above
New Jersey passed rules allowing for out-of-competition testing in mid-October of last year. Since then, the state has drawn blood from horses trained by 15 to 20 trainers in the state, Zanzuccki said. Only one, the Standardbred trainer Ernest Adam, produced positive test results for EPO, one of two common blood-doping drugs. Adam and the owner of the horses, Steven Slender, were both banned for 10 years and fined $50,000. Slender has appealed the ruling.
Interesting. There we go. Owner responsibility.
Eric