From an altitude of 10,000 feet, the Horseracing Integrity and Safety Act (HISA)'s mandated goal is a simple two-pronged affair. Uniformity in welfare and safety. Uniformity in drug testing. Over the past few months, the Horseracing Integrity and Welfare Unit (HIWU)--HISA's enforcement arm--has made several announcements that have peeled the curtain back on just how difficult the second part of that equation will be to accomplish. Internal reviews of the six HIWU-contracted laboratories uncovered different limits of detection in blood for diabetes drug Metformin and for benzoylecgonine (BZE), a metabolite...