According to Cost Helper, the average cost of a professional polygraph test is between $200 and $800 for a two-hour session. Longer sessions can cost up to $2,000. Some polygraph services offer discounts to those who ord... More »

A person can beat a polygraph test by triggering strong reactions during the test questions and remaining calm as the pertinent questions come up, according to Elizabeth Flock for U.S. News & World Report. Causing pain t... More »

Options for inexpensive polygraph tests include using online tests, buying polygraph software, buying a polygraph machine, opting for a voice test and negotiating with professional polygraph administrators, according to ... More »

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As of 2015, the cost of a polygraph test administered by certified examiners ranges from $200 to $2,000, depending on the length of the test, according to CostHelper. The high end of the scale includes all-day testing. S... More »

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