Austell, Georgia detective agency offering polygraph examinations.

Polygraph examiners serving Australia and the Asia Pacific region.

Inter-disciplinary team of forensic psychologists and computer scientists operating throughout the European Union.

Certified examiner licensed to conduct examinations in North Carolina and Virginia.

Hagerstown, Maryland, polygraph and investigation agency.

Retired federal agents provide polygraph and security guard services in Dallas, Texas.

Polygraph examiner in Leatherhead, Surrey, UK.

Certified polygraph testing service based in Georgia and South Carolina, but examinations can be administered anywhere. Expert polygraph witness and former federal examiner.

Fort Worth polygraph examiners serving clients in North Texas.

Los Angeles, California, polygraph examination administered by Louis Rovner, Ph.D.

Private polygraph examiner near Kansas City, Missouri.

Examiner with offices in Plantation and Miami Lakes, Florida.

Dallas, Texas examiners performing assessments for domestic infidelity, employee theft, and attorney/client examinations.

Polygraph quality control, training, program development, testing, and other services.

Oxford, UK, based examiners serving the UK and Europe.

Polygraph examiner and licensed private investigator based in California.

Bilingual (English/Spanish) polygraph examiner in Laguna Hills, California.

Singapore polygraph company providing polygraph testing services and training.

Computerized polygraph investigation and screening with three Florida offices in Merritt Island, Ft. Pierce, and Orlando.

Fort Worth, Texas agency advertising polygraph examinations, instant drug tests, and psychological profile analysis.

Computerized polygraph agency in Southern California.

James R. Wygant, retired polygraph examiner in Portland, Oregon who still teaches and does presentations.