limit of detection

In a statement Thursday, the Horseracing Integrity and Welfare Unit (HIWU)--the enforcement arm of the Horseracing Integrity and Safety Act (HISA)--said that an internal review of the six accredited laboratories used by the agency had unearthed different limits of detection in blood for metformin, a banned substance at all times under HISA. "Following this review, which was conducted in collaboration with the laboratories, it was determined that not all applied the same Limit of Detection in analyzing samples for the presence of Metformin. HIWU has since met with all six...