Current through Register Vol. 54, No. 44, November 2, 2024
Section 403.17 - Androgenic-anabolic steroid (AAS)(a) As set forth in the Commission's regulations, no Androgenic-anabolic steroid (AAS) shall be permitted in test samples collected from racing horses except for endogenous concentrations of the naturally occurring substances boldenone, nandrolone and testosterone at concentrations less than the approved thresholds.(b) Concentrations of these AAS shall not exceed the following free (that is, not conjugated) steroid concentrations in plasma or serum:(1)Boldenone-A confirmatory threshold not greater than 25 picograms/milliliter for all horses, regardless of sex;(2)Nandrolone-A confirmatory threshold not greater than 25 picograms/milliliter for fillies, mares and geldings; male horses other than geldings shall be tested for Nandrolone in urine;(3)Testosterone-A confirmatory threshold not greater than 100 picograms/milliliter for fillies, mares and gelding.(c) Total concentrations of these AAS shall not exceed the following total concentrations in urine after hydrolysis of conjugates:(1)Boldenone-A confirmatory threshold not greater than 1 nanogram/milliliter for fillies, mares and geldings; a confirmatory threshold not greater than 15 nanograms/milliliter in male horses other than geldings;(2)Nandrolone-A confirmatory threshold not greater than 1 nanogram/milliliter for fillies, mares and geldings; a confirmatory threshold not greater than 45 nanograms/milliliter (as 5-estrane-3,17-diol) of urine in male horses other than geldings;(3)Testosterone-A confirmatory threshold of not greater than 55 nanograms/milliliter of urine in fillies and mares (unless in foal); a confirmatory threshold of not less than 20 nanograms/milliliter in geldings.(d) All other AAS are expressly prohibited in racing horses.(e) The sex of the horse must be identified to the Commission's testing laboratory on all pre-race and post-race samples designated for anabolic steroid testing.(f) If an anabolic steroid has been administered to a horse to assist in its recovery from illness or injury, that horse shall be placed on the Veterinarian's List to monitor the concentration of the drug or metabolite in urine or blood. After the concentration has fallen below the designated threshold for the administrated AAS, the horse shall be eligible to be removed from the list.