Section 405 ILCS 5/4-705 - Petition for discharge; examination(a) At any time a person admitted by court order under Article V of this Chapter or under any prior statute or any person 18 years of age or older on his behalf may file a petition for discharge with the court.(b) The petition shall set forth: (1) the name of the client; (2) the events that precipitated the admission and the date of the admission order; and (3) a request for discharge and the reasons for the request. The petition shall be accompanied by the certificate of a clinical psychologist, clinical social worker, or physician stating that the client no longer meets the standard for judicial admission and specifying the reasons for that conclusion.(c) If the petition is not accompanied by a certificate, the court shall appoint a clinical psychologist, clinical social worker, or physician to examine the client. If the clinical psychologist, clinical social worker, or physician determines that the client does not meet the standard for judicial admission, he shall execute a certificate so stating. The client is also entitled to an independent examination pursuant to Section 4-605.