Frequently Asked Questions


How reliable is the polygraph?

According to the American Polygraph Association (APA) when polygraph examinations are conducted within their guidelines it is between 83% – 95% effective for single issue tests. More information about polygraph validity:  American Polygraph Association.

Are the results of the polygraph confidential?

The results of the polygraph are considered confidential. Those taking the polygraph will need to sign our Polygraph Release which details areas of confidentiality.

How much does the polygraph cost?

Accident, MD

  • Fidelity: $600.00
  • Criminal: $750.00
  • Post Conviction Sex Offender (PSCOT) / Other : Get a Quote

What should I bring on the day of the polygraph?

A government-issued photo ID and any medications you have taken recently.

How many questions can be asked?

Typically three relevant questions can be asked but the all have to pertain to the same subject. This does not include any control questions. There are forms of polygraph tests, such as statement verification tests, which are much broader in what can be asked but those forms of tests usually have lower or scientifically unconfirmed validity.


How do I change the date or time of my polygraph test?

Please contact us. If it is less than 24 hours before the scheduled test time, there is a $100 rescheduling fee.

How do I cancel my appointment and can I get a refund?

Please see our full cancellation policy for details.

What is your billing address?

Polygraph Services
208 Drane Dr.
Accident, MD 21520


I can’t use the booking calendar. Can I make an appointment in another way?

Please contact us.

I am having a problem with the website, who do I contact?

Please email or use the contact form.

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