Ill. Admin. Code tit. 20, § 1580.40
d) The IRB may approve research applications involving human subjects if the IRB has determined that all of the following requirements are satisfied:
4) Unless otherwise authorized by law or regulation, informed consent must be obtained and appropriately documented for each participating subject or the subject's legally authorized representative. When the IRB determines that the research project must include procedures for obtaining informed consent, the IRB shall ensure that informed consent is obtained under circumstances and through procedures that adhere to all applicable laws and regulations, and minimize any coercion or undue influence upon the subject or representative. Unless otherwise authorized by law or regulation, the following elements of informed consent must be provided to each human subject: