The Association of Racing Commissioners International has updated its Uniform Classification Guidelines for Foreign Substances and Recommended Penalties and Model Rule Update.
Horsemen and chemists believe drug positives aren't cut and dried, but regulators suggest the interests of the public, members of which may not understand the science of drug testing, must be protected.
The Ontario Racing Commission will allow trainers with positives for aminorex, a methamphetamine-like substance, to enter horses in races in the province as the investigation into the origin of the drug continues.
Positives for a methamphetamine-like drug in racehorses have several laboratories and investigators working to determine its origin.
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