Every week, the TDN posts a roundup of the relevant Horseracing Integrity and Safety Act (HISA) related rulings from around the country. Among this week's rulings, trainer Silvino Ramirez was suspended for 30-days and fined $2,500 after his trainee, Perfect Day, tested positive for an alkalinizing agent (TCO2) when finishing fifth at Parx Racing on April 17. High total carbon dioxide (TCO2) levels could be an indication of bicarbonate loading—otherwise known as milkshaking—which can neutralize the buildup of lactic acid in muscles, thereby helping the horse's performance. Veterinarian Donald McCrosky was also suspended 30-days for violating the terms of a prior suspension. HIWU's publicly-posted...