What’s Happening With That Rule? Provisional Suspensions for Key Substances
by Natalie Voss | January 21, 2026
Please note that as of March 2026, a second draft of this rule change proposal was issued in response to committee and member feedback. The new version of the proposal limits the provisional suspension to the horse and the trainer, and does not impose it until after the B sample has been returned. As of June 2026, provisional suspensions were removed from this rule draft after considerable feedback from members who were not in favor of it, and the version of the rule which was approved focused












