The Horseracing Integrity and Safety Authority (HISA) and Horseracing Integrity and Welfare Unit (HIWU) have opened an investigation into the University of Kentucky's Equine Analytical Chemistry Laboratory's performance, according to a joint statement Tuesday by the agencies. On the 16th of last month, HIWU stopped sending samples to the UK Lab. Prior to that, the laboratory had been one of six drug testing facilities used under HISA's anti-doping and medication control (ADMC) program. Last week, Scott Stanley officially stepped down from his position as the UK Lab's director and has...