Lie Detector Test Missouri
Professional, confidential polygraph testing from Kansas City to St. Louis and throughout the Show-Me State. Examiners trained to APA standards, controlled-environment offices, same-day results.
Missouri Testing Locations & Prices
All-inclusive rates, listed by office. Search above to sort by distance from you.
Missouri's polygraph testing network spans the state's two major metropolitan areas — Kansas City in the west and St. Louis in the east — with additional coverage in between. Our examiners provide professional examinations in controlled-environment offices, serving the Show-Me State's diverse population.
A lie detector test in Missouri costs between $550 and $700 depending on location. All prices are all-inclusive — covering the booking fee, an examiner trained to APA standards, private office, pre-test assessment, full polygraph examination, and a detailed written report. Only a $100 refundable deposit is required to book: refunded in full if we can’t book you, deducted from your total once your appointment is confirmed.
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Polygraph
Statutes
Admissibility in Missouri courts
Missouri courts exclude polygraph evidence in criminal proceedings under established case law. Polygraphs are used in probation compliance and sex offender treatment programs. Stipulated polygraphs may be considered in limited civil contexts.
Workplace polygraph law (EPPA)
Federal EPPA applies to private employers. Missouri law enforcement agencies actively use polygraph for hiring and internal investigations.
References: Admissibility by State Guide · EPPA Guide · Fraud alerts · Our standards of practice
Polygraph Organizations & Examiner Standards in Missouri
These are the professional bodies that set and police examiner standards in Missouri. Membership is voluntary — which is exactly why it matters: it binds an examiner to a code of ethics, continuing education, and peer accountability.
The world's leading professional polygraph organization, representing more than 2,800 experienced polygraph examiners in private business, law enforcement, and government across 60+ countries.
Full profile →Every Examiner We Assign in Missouri Meets All of These Criteria
Booking Through Us vs. Finding an Examiner on Your Own
On your own
- You must confirm the training school is genuinely APA-accredited — many “certificates” come from unaccredited courses.
- You must check that memberships are real and have not lapsed.
- Few people think to ask about professional liability insurance.
- A sole operator often has no published standards and no complaints route.
- You may pay in full for a test your situation is not suitable for.
Booking through us
- Training, accreditation, and credentials already verified.
- Memberships checked and kept current.
- Professional liability insurance in place.
- Published Code of Ethics, Standards of Practice, and complaints procedure.
- Every case reviewed first — if it’s unsuitable, your $100 deposit is refunded in full.
Frequently Asked Questions — Missouri
Q.01How do I book a lie detector test in Missouri?
Q.02How much does a polygraph test cost in Missouri?
Q.03How many testing locations do you have in Missouri?
Q.04Are polygraph results admissible in Missouri courts?
Q.05Are your examiners in Missouri certified?
Q.06How long does a polygraph examination take?
Book Your Test in Missouri
Only a $100 deposit — select your location, date, and time. Confirmation sent instantly.