725 ILCS 200/1: Lie Detector Tests.

(a) No law enforcement officer, State's Attorney or other official shall ask or require an alleged victim of an offense described in Sections 11-1.20 through 11-1.60 or 12-13 through 12-16 of the Criminal Code of 1961 or the Criminal Code of 2012 to submit to a polygraph examination or any form of a mechanical or electrical lie detector test.

(b) A victim's refusal to submit to a polygraph or any form of a mechanical or electrical lie detector test shall not mitigate against the investigation, charging or prosecution of the pending case as originally charged.