On Friday--the final day of the National HBPA Conference at Prairie Meadows--a panel entitled "Establishing No-Effect Thresholds and the Importance for the Industry" was led by practicing equine veterinarian and researcher Dr. Clara Fenger. She cited the Horseracing Integrity & Safety Authority's enabling legislation that HISA-covered horses "should compete only when they are free from the influence of medications ..." (her emphasis added). Fenger's point: Testing many substances to limit of detection--if the lab can find it, it's a violation, no matter how tiny the amount and whether it impacts...