Lie Detector Test in Illinois
We do not currently operate a permanent office in Illinois. Clients are tested at nearby offices across the state line — the closest around 1 hour’ drive — or an examination can be arranged at a suitable professional venue within Illinois.
Where Illinois clients take their test
Distances and drive times from major Illinois cities to the nearest professional testing office. All prices are all-inclusive.
Find the closest office to you
Enter your Illinois zip code or city to see the nearest offices, distances, and prices.
Prefer not to travel?
Where travel to a neighbouring state is not practical, an examination can be arranged at a suitable professional venue within Illinois — a private, controlled office environment that meets the same conditions as our permanent locations. Availability depends on your case and location; arrangements are confirmed individually.
Discuss an Arranged ExaminationPolygraph law in Illinois
Illinois generally excludes polygraph evidence in criminal proceedings under established case law. The state requires polygraph examiner licensing under the Illinois Detection of Deception Examiners Act (225 ILCS 430). Polygraphs are used in probation compliance and sex offender treatment.
Federal EPPA applies. Illinois has additional state-level protections under the Illinois Employee Credit Privacy Act and Detection of Deception Examiners Act, restricting workplace polygraph use.
Polygraph examiners in Illinois are overseen by the Illinois Detection of Deception Examiners Board.
Full legal guide: Polygraph Laws & Regulations in Illinois. Private polygraph testing is legal in all 50 states.
Every test type, at every office
Common questions from Illinois clients
Where is the nearest lie detector test office to Illinois?
The closest office for most Illinois clients is St. Louis, Missouri — around 3 miles from East Saint Louis. Exact prices, the address, and online booking are on the office page.
Is a private lie detector test legal in Illinois?
Yes. Private polygraph testing is legal in all 50 states for consenting adults. Restrictions apply mainly to employer-mandated testing (under the federal EPPA) and to how results may be used in court.
How much does a lie detector test cost for Illinois clients?
Prices are set per office and are all-inclusive — covering the booking deposit, pre-test assessment, the examination, and a detailed written report. The routes above show the from-price at each nearby office; there is no surcharge for coming from another state.
Can the examination take place in Illinois?
In many cases, yes. An examination can be arranged at a suitable professional venue within Illinois where conditions allow a controlled testing environment. Contact us with your location and case details to check availability.
Book your test today
Choose a nearby office, pick a time, and reserve with a $100 deposit — refunded if we can’t book you. Instant SMS and email confirmation.