Michigan Compiled Laws, Chapter 700. Estates and Protected Individuals Code § 700.1306

Sec. 1306. Except as otherwise specifically provided in this act or by supreme court rule, a document, including an application, petition, or demand for notice, filed with the court under this act is considered to include an oath, affirmation, or statement to the effect that the document's representations are true as far as the individual executing or filing the document knows or is informed, and penalties for perjury may follow deliberate falsification in the document.