Thurston Polygraph provides professional polygraph services to the greater Bay Area and throughout the State of California. We offer a wide range of polygraph services using the most advanced polygraph testing techniques and procedures in the industry.

Our goal is to offer you a professionally administered exam at a reasonable price.

Our founder, D'Vour Lorron Thurston has over 15 years of criminal justice, federal and civil investigative experience.

He completed his polygraph training at Marston Polygraph Academy, an American Polygraph Association (APA) approved polygraph school.  D'Vour has also completed additional advance polygraph training to examine supervised sex offenders (PSCOT).
Professional Memberships:
- National Polygraph Association, (NPA)
- Police Officers Research Association of California, (PORAC)
- Association of Certified Background Investigators, (ACBI)


Bay Area Polygraph - Bay Area lie detector -- Polygraph examiner – Examiner - Lie detector – Truth – California – polygrapher - Cheating