Michigan Compiled Laws, Chapter 330. Mental Health Code § 330.1505

Sec. 505. (1) Six months before the eighteenth birthday of each resident in a facility, the resident shall be evaluated by the center for the purpose of determining whether he or she is competent to execute an application for administrative admission.

(2) If it is determined by the facility that the resident is not competent to execute an application for administrative admission, or otherwise requires the protective services of a guardian, a parent, or if none, another interested person or entity, the parent, guardian, or interested party shall be notified and requested to file a petition for the appointment of a plenary or partial guardian. If a petition is not filed, the facility may, but need not, file a petition.