Michigan Compiled Laws, Chapter 333. Health § 333.5682

Sec. 5682. If an individual has reason to believe that a POST form has been executed contrary to the wishes of the patient or, if the patient is a ward, contrary to the wishes or best interests of the ward, the individual may petition the probate court to have the POST form and the conditions of its execution reviewed. If the probate court finds that the POST form has been executed contrary to the wishes of the patient or, if the patient is a ward, contrary to the wishes or best interests of the ward, the probate court shall issue an injunction voiding the effectiveness of the POST form and prohibiting compliance with the POST form.