horse racing drug positives

After receiving a seven-day suspension and a $1,000 fine after a horse he trained tested positive for a metabolite of Tramadol, trainer Rusty Arnold went on the offensive. While he did not argue the fact that the horse tested positive, he has said that it is grossly unfair that the HISA/HIWU continues to suspended trainers for minute amounts of drugs that aren't considered performance-enhancing. Advocating for a major change in how these infractions are dealt with, Arnold was this week's guest on the TDN Writers' Room podcast presented by Keeneland....

As a Clinical Pharmacologist (human) and an avid horse player, I have grown tired of these instances of biologic samples from horses having banned substances found and the "interesting" explanations as to how the exposure happened. One recent example was a story of a horse in which three samples of blood had metformin (a drug used to treat type II diabetes in humans) detected. The explanation was that a groom and later the trainer was taking metformin and "touched the horse's face." This explanation is questionable from a clinical pharmacology...