MICHIGAN MEDICATION CHANGES FACT SHEET
- Equine drug testing will now be conducted by Industrial Labs to National Uniform Medication
- Therapeutic medications and their thresholds are available at the following websites:
Racing Medication and Testing Consortium (RMTC) – www.rmtcnet.com
Association of Racing Commissioners International (ARCI) – www.arci.com
- If you have raced in Indiana, Minnesota, or West Virginia, this is the same laboratory and
thresholds. The rest of the country, with the exception of Ohio and Delaware (Stb), also uses
- The RMTC and ARCI offer guidelines for withdrawal times of therapeutic medications on their websites. These withdrawal guidelines are for informational purposes only. They do not
constitute a guarantee. Additionally, this guidance is based upon administration of a single
medication. The combination of any of these medications or addition of other substances may
substantially affect the withdrawal times. It’s important to note the withdrawal guidelines are for a specific dosage and route of administration. If a different dosage or administration route is used, the time listed in the withdrawal guideline section will not be applicable. It is always best to consult your veterinarian about specific medication withdrawal requirements.
- Methylprednisolone (Depo) and Clenbuterol have extended withdrawal periods as reflected in the RMTC guidelines.
- Stacking thresholds are now in effect for the common NSAIDs phenylbutazone, flunixin and
ketoprofen. If you use one of these medications, it is allowed up to the stated threshold. If more
than one is present, the second medication is held to a much lower threshold.
- A horse given anabolic steroids in the last 6 months should have a blood sample tested before
entry to assure the medication is eliminated from the horse’s system.
- The procaine penicillin threshold is based on discontinuing the medication before time of entry and declaring its use with the MGCB veterinarian. This must be done before time of entry and the treated horse must report for quarantine 6 hours before post time.
- Cobalt penalties depend on the blood concentration. The threshold is 25 ppb, the penalty
increases when the concentration is over 50 ppb.
- Industrial Laboratories Therapeutic Medication Research Program:
A veterinarian may submit a blood sample from a horse for testing to determine if a therapeutic medication has been eliminated from the horse’s system. This service is free of charge. Please call the MGCB office or contact a MGCB veterinarian for details.