Michigan Compiled Laws, Chapter 431. Racing, Boxing and Exhibitions § 431.331

(a) Introduces an object or foreign substance into the nostrils or windpipe of a horse that is entered or intended to be entered in a race or workout at a licensed race meeting in this state for the purpose of affecting the racing condition or performance of the horse in a race or workout, without authorization of the racing commissioner.

(b) Has in his or her possession within the confines of a racetrack, stable, shed, building, or grounds of a licensed race meeting, or within the confines of an off-track stable, shed, building, or grounds where horses are kept that are eligible to race over the racetrack of the holder of a race meeting license, any drug not authorized by the racing commissioner for use at those locations, or a battery or buzzer, electrical or mechanical, or syringe, hypodermic needle, or other appliance device, other than the ordinary whip, that may or can be used for the purpose of affecting a horse's racing condition or performance in a race or workout at a licensed race meeting in this state.

(c) Has in his or her possession within the confines of a racetrack, stable, shed, building, or grounds of a licensed race meeting or within the confines of an off-track stable, shed, building, or grounds where horses are kept that are eligible to race over the racetrack of the holder of a race meeting license a controlled substance or a hypodermic needle or other instrument that can be used to administer a controlled substance, unless the controlled substance was obtained directly from or pursuant to a prescription from a licensed physician and the person notifies the racing commissioner or racing commissioner's designee that the person possesses the controlled substance or instrument.