Section 405 ILCS 5/4-402 - Examination; certificate(a) No person may be detained at a facility for more than 24 hours pending admission under this Article unless within that time a clinical psychologist, clinical social worker, or physician examines the respondent and certifies that he meets the standard for emergency admission.(b) The certificate shall contain the examiner's observations, other factual information relied upon, and a statement as to whether the respondent was advised of his rights under Section 4-503. If no certificate is executed, the respondent shall be released immediately.