The disclosure of any information, records, reports, statements, notes, memoranda or other data obtained in any such medical study except that necessary for the purpose of the specific study is unlawful, and any person convicted of violating any of the provisions of Part 21 of Article VIII of this Act is guilty of a Class A misdemeanor.
8-2105.Improper disclosure.
Article VIII. Evidence · Part 21. Medical Studies · Not amended since adoption on record · Last verified July 20, 2026
In one sentenceMakes it unlawful, and punishable as a Class A misdemeanor, to disclose medical-study information gathered under Part 21 beyond what the specific study itself requires.
Full Text of 735 ILCS 5/8-2105
Plain-English Summary
Disclosing any information, records, reports, statements, notes, memoranda, or other data obtained in a medical study is unlawful, except for disclosure necessary for the purpose of that specific study.
Anyone convicted of violating any provision of Part 21 of Article VIII — not just this section — is guilty of a Class A misdemeanor, giving the confidentiality, nondiscoverability, and inadmissibility rules in the earlier sections a criminal backstop.
Frequently Asked Questions
What disclosure does this section prohibit?
Disclosing medical-study data beyond what's necessary for the purpose of that specific study.
What is the penalty for violating this section?
Conviction as a Class A misdemeanor.
Does the misdemeanor penalty apply only to this section, or to Part 21 generally?
To any violation "of the provisions of Part 21 of Article VIII" — the whole Medical Studies part, not just this section alone.
Can necessary disclosures within the study still happen?
Yes — the prohibition is limited to disclosure "except that necessary for the purpose of the specific study."
How does this section relate to Sections 8-2101 and 8-2102?
Those sections make the information privileged, confidential, inadmissible, and non-discoverable; this section backs that up with criminal liability for improper disclosure.
Amendment History
(Source: P.A. 83-707.)
Source & verification. Section text and amendment history are
reproduced verbatim from the Illinois Compiled Statutes, published by the
Illinois Compiled Statutes, Illinois General Assembly / Legislative Reference Bureau. Last verified July 20, 2026.
· Official source
Also known as: medical studies act penalty illinoisimproper disclosure medical study illinoisclass a misdemeanor peer review illinoisunlawful disclosure medical study data illinois