The undefeated Charlatan, as well as his stablemate Gamine, who also won on the May 2 racing card, tested positive for lidocaine, a local numbing agent, according to the person, who spoke Tuesday on the condition of anonymity because the case had not been fully adjudicated.
Article source: https://www.nytimes.com/2020/05/26/sports/horse-racing/charlatan-bob-baffert-doping.html