Global Polygraph Network
United States, Nationwide
Global Polygraph Network is the world's oldest and largest referral service for private polygraph (lie detector) testing, offering services at more than 500 testing locations worldwide.
Main Services:
Lie Detector Tests, Lie Detector Testing, Lie Detector, Polygraph Tests, Polygraph Testing, Polygraph Exams, Lie Detector for Cheating, Lie Detector for Infidelity, Polygraph for Cheating, Polygraph for Infidelity
Our examiners are all graduates of APA Accredited Training Schools, are thoroughly screened, and submit to Quality Control reviews before being considered for membership. Half of the examiners submitting applications are denied membership for lack of qualifications or experience. Members must complete regular continuing education programs to ensure they are using the most up-to-date and APA validated techniques. Our clients will never be referred to an untrained or fraudulent examiner.
During the 1980’s, GPN owner Michael Martin began regularly conducting lie detector tests for national media organizations which generated a great deal of demand for Michael’s services. Unfortunately, outside of Michael’s basic service area clients were finding it difficult to afford the prohibitive fees necessary for Michael to travel to locations elsewhere in the United States. Michael began to enlist the aid of other qualified polygraph examiners to handle this additional workload, within a few years the volume of cases had become too great to support an informal network, and in 1987 the concept for the Nationwide Polygraph Network was born. For the first time, clients all over the United States were able to locate and hire highly qualified private examiners using this new “Network” solution. Due to the overwhelming response to this concept, requests began to flood in from Canada and other countries as well, so in 2003 the Nationwide Polygraph Network became the Global Polygraph Network ®. In 2023, GPN received its U.S. Trademark, legally establishing and protecting the brand.
Michael Martin has been a Forensic Psychophysiologist (polygraph examiner) for 40 years and has completed over 11,500 examinations of all types. Better known as “The Lie Detector Guy” from 1997 to 2002, Michael has appeared over 350 times on national and international television as a polygraph expert. Some of these shows include MSNBC, 20/20, 48 Hours, WNBC News, Fox News, Sci-Fi Channel’s Proof Positive, Discovery Channel’s Mythbusters, Sally Jessy Raphael, Ricki Lake, Maury Povich, Dr. Joy Browne, Forgive or Forget, Morton Downey Jr., Richard Bey, and many more. Michael has authored two polygraph textbooks, Polygraph Theory © 1994 and PDD Testing for Domestic Issues (A Guide for Examiners) © 2019 , and is available for speaking engagements on the topic of Forensic Psychophysiology or Domestic Issue Polygraph Testing.
Avoid “discount” polygraph frauds and “over the phone” testing scams. We only provide real polygraphs by APA certified examiners.