Lie Detector Test Cost in Maryland: 2026 Pricing Guide

Our Maryland Prices

LieDetectorTest.com has 2 polygraph testing offices across Maryland. A standard test — one person, one issue — costs a flat $900 at every office. Whichever office you choose, the figure you are quoted is the complete fee, not a starting point: the pre-test assessment, the examination itself, chart analysis, your same-day verbal result and your written report are all inside it.

You reserve an appointment with a $100 deposit. It comes off your total, and if we cannot offer you a suitable appointment — or your case turns out not to be suitable for polygraph testing — it is refunded in full. The initial consultation costs nothing, and nothing is added to the price afterwards.

Maryland Price List

What the Fee Includes

• The pre-test assessment. A private interview in which your examiner reviews your case, agrees the exact wording of every question with you, and confirms you are suitable for testing.
• The examination itself. Multiple chart collections run by an examiner trained to APA standards, using validated APA techniques.
• Scoring and analysis. Numerical scoring of the charts after the test, not an on-the-spot impression.
• Your result on the day. Your examiner tells you the outcome verbally before you leave.
• A full written report within 48 hours, setting out the questions asked, the technique used and the conclusion.
• A private, appointment-only office. A controlled testing room — never a car park, a hotel lobby or your kitchen table unless you have specifically booked in-home testing.

What Changes the Price — and What Does Not

Which office you book is the main variable in Maryland. Each office sets its own rate around local examiner availability, travel and venue costs, and the rate is fixed — you see the exact figure for your chosen office before you confirm anything.

How many people are tested is the second. Two people booked together as a couple test cost less than two standard tests, and a group of three or more moves to the per-person group rate automatically.

Whether one examination is enough is the third. A single test covers up to three relevant questions on one issue. If your case spans genuinely separate issues, it needs separate examinations, and each is charged as its own test. Your examiner will tell you at the consultation stage if that applies to you, before you have paid anything beyond the deposit.

What does not change the price is the subject matter. An infidelity test, a theft investigation, a false-allegation defence test and a pre-employment integrity test all cost the same at the same office. There is no surcharge for a sensitive subject, no separate charge for the written report, and no travel fee when you come to one of our offices.

Lie Detector Test Prices by City in Maryland

Every Maryland testing office and its all-inclusive price. These are the figures you pay — there is nothing added on top.

Book a test in Maryland → See every Maryland office →

Examiner Qualifications and Experience

The qualifications and professional track record of your polygraph examiner are directly reflected in pricing. Examiners with American Polygraph Association (APA) certification, extensive law enforcement backgrounds, and decades of experience typically charge more — but they also deliver more reliable, well-documented results.

Essential Credentials to Verify

Since Maryland does not require a state polygraph licence, verifying an examiner's credentials is critical. Look for the following qualifications when selecting a Maryland polygraph examiner:

APA Membership or Certification: The American Polygraph Association sets the industry's highest professional standards. APA members must meet continuing education requirements every two years, and the APA recommends a minimum of 400 hours of classroom instruction.

PCSOT Certification: If you need post-conviction sex offender testing, confirm the examiner holds specific PCSOT certification from the APA.

Professional Experience: Experienced examiners with backgrounds in law enforcement, criminal investigation, or forensic work bring valuable expertise. Maryland State Police polygraph examiners, for example, are required to have at least five years of experience including three years in criminal investigative work. Reputable professionals understand that quality polygraph testing requires professional equipment, extensive training, and detailed analysis — none of which comes cheaply.

Research has shown that mental countermeasures can be identified by experienced examiners. A 2010 study published in the European Polygraph demonstrated that covert attempts to defeat polygraph testing are detectable through proper examination procedures.

If an attorney has referred you for testing, discuss the scope and objectives of the examination with your legal counsel beforehand. For relationship or infidelity tests, think carefully about the specific questions or concerns you want addressed and communicate them clearly during your booking process.

Most Maryland polygraph providers accept payment via credit card, debit card, or electronic payment. Ready to schedule? Book a polygraph test today or contact us with any questions.

Regional Price Comparison

Maryland's polygraph pricing is broadly consistent with the Mid-Atlantic region, though location-specific factors can create variation. Here is how Maryland compares to neighbouring states:

See our detailed Pennsylvania pricing guide for specifics.

Delaware: As a smaller state with fewer providers, Delaware pricing can vary. Review our Delaware pricing guide for current rates.

The Washington D.C. metropolitan area, which extends into Maryland's Montgomery and Prince George's counties, tends to push prices toward the higher end due to elevated operating costs and strong demand from government-adjacent clients.

For residents in southern Maryland or the Eastern Shore, travelling to a well-established examiner in Baltimore or the D.C. suburbs is typically worthwhile, even factoring in travel time. Quality and examiner qualifications should always take priority over proximity when choosing your testing provider.

For a comprehensive nationwide comparison, explore our Polygraph Test Costs by State: 2026 Price Guide.

Why Investing in Quality Matters

When it comes to polygraph testing, the investment in a qualified, experienced examiner pays dividends in accuracy and peace of mind. The APA's comprehensive 2011 meta-analysis — reviewing 38 studies encompassing 3,723 examinations — found that validated single-issue diagnostic testing techniques produced an aggregated decision accuracy of 89%, with a confidence interval reaching up to 95%. Validated evidentiary techniques are required to demonstrate accuracy rates of 90% or greater [2]Verified APA Standards of Practice (Adopted August 23, 2019)
Confirms evidentiary polygraph techniques must demonstrate 90% or greater accuracy rate.

A survey of the largest police agencies in the United States found that over 90% of agencies with active polygraph screening programmes expressed moderate or high confidence in their programme, and 80% reported accuracy rates between 86% and 100% in their operational experience. These findings demonstrate the robust utility of polygraph testing when conducted by trained professionals following validated protocols.

Assessment frameworks for evaluating deception detection systems emphasise the importance of incorporating base rates and costs into system evaluation, ensuring that the value of polygraph testing is measured against real-world conditions rather than theoretical benchmarks alone. Polygraph examinations also serve important adaptive functions — research has demonstrated practical approaches for accommodating examinees with diverse needs, including individuals with hearing and speech disabilities.

Visit our Polygraph Research Database for access to the latest peer-reviewed studies on polygraph validity and testing methodology.