Maryland Polygraph Lie Detector Locations

Where can I get a polygraph test near me? How much does a lie detector test cost? You can find our testing locations and prices below, including examiner credentials, office hours, and more. Follow these steps to schedule an appointment.

  • STEP 1: Select the GPN testing location you would prefer to go to (see below).
  • STEP 2: Register for an exam, either online or by calling our 24-hour hotline.
  • STEP 3: After processing, your examiner will contact you to schedule an appointment, and the examiner's contact information will be emailed to you.
  • STEP 4: Schedule an appointment for a mutually convenient date and time.
  • STEP 5: Discuss with your examiner what you are trying to resolve with the test.
  • STEP 6: After the exam, your examiner will provide a detailed written report.

Enter your zip code to find our nearest location (U.S. only)



City Cost
Aberdeen MD 575 USD
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Annapolis MD 575 USD
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Baltimore MD Harbor 575 USD
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Baltimore MD West 575 USD
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Bethesda MD 575 USD
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Columbia MD 575 USD
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Easton MD 1200 USD
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Elkton MD 1200 USD
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Frederick MD 575 USD
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Gaithersburg MD 575 USD
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Hagerstown MD 1200 USD
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Salisbury MD 1200 USD
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Severna Park MD 550 USD
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Silver Spring MD 575 USD
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Towson MD 575 USD
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Westminster MD 1200 USD
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zz Near Maryland – Reston VA 575 USD
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*If the exam is provided at the customer’s location:

It is the customer’s responsibility to provide a suitable testing room.
The room must be quiet and free from distracting noises and other interference (e.g., crying babies, telephones, television, nearby conversations). Room temperature should be between 70-75 degrees F (21-24 C). No one other than the subject and examiner (and possibly the examiner’s assistant or interpreter) are permitted in the exam room. There must be a table (18″ x 30″ minimum), two chairs, and an electrical outlet. This room may be inside someone’s home or office or may be a rented meeting room at a hotel. We do not recommend testing in a hotel room or bedroom, particularly with female subjects, for obvious reasons. This room must be provided at the customer’s expense, as it is not included in the exam fee.
For answers to other questions, please visit our FAQ page.