How Much Does It Cost To Take A Lie Detector Test?


9 Answers

David Gill Profile
David Gill answered

Lie detector or polygraph tests cost between £500 and £750 pounds in the UK and around $400 in the U.S where the technology is more prevalent.

This price includes the test, the tester and technology’s travel to the place you want the test done, the type of test and the duration and analysis of test.

Polygraph tests are used to determine whether a person is telling the truth.

They measure this through a number of factors that take into account a person’s body movements and reactions to certain questions. These physiological tests include respiratory rate, blood volume, pulse rate and galvanic skin response among others.

Users will usually be asked sample questions before hand to determine responses to the truth so as to gauge responses during the real test.

Polygraph test equipment varies in cost and older analogue equipment can now be purchased for about $1200. Newer computer based digital equipment, which is considered more accurate can cost between $6,000 and a five figure sum, depending on the machine.

There has been plenty of dubiousness over the reliability of polygraph tests, with many members of the scientific community claiming they are merely pseudoscience and are nothing more than a gimmick.

There are also some well-known counter measures to pass polygraph tests. These include breathing techniques, speeding up heart rate during control questions through thinking of scary things and the use of deodorant on hands to prevent galvanic skin responses.

Polygraph tests are used as evidence in court in very few countries for the aforementioned reason, though they may be used as for questioning during interviews or for espionage or security clearances and were especially common during the Cold War.

Anonymous Profile
Anonymous answered
The test costs about £550 plus any travel costs. The best place to find a qualified polygraph examiners is
I have used the Chairman Don Cargill who is a fantastic examiner and highly professional.
Anonymous Profile
Anonymous answered
The lie detector tests ranges in price.  This one was 500.00.  You need to go online and search for Polygraph testing. And it will ask you where you live and the closest location to do this test.
Anonymous Profile
Anonymous answered
I have been acussed of hurting my 3 yr old boy but I no I havent I have not been charged by the police but I am still getting blamed by other people I need to no how and what questions would be asked to prove I didnt hurt him between the 22nd of januery and the 25th januery 2010 . I live in sunderland (north east ) please could you help me
Niamh O'Donnell Profile
Niamh O'Donnell answered

For anyone in Ireland wanting to take a polygraph / lie detector test I can highly recommend NOT shopping online as you really need a company that you can check out face to face. I got scammed that way  :-/

Anonymous Profile
Anonymous answered

Testing in NYC area ranges from 400 to 1000 dollars deepening on the issue.
Anonymous Profile
Anonymous answered
Depends on if you're talking about a person or machine, and exactly which person and which machine.

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