When Character Matters

Accurate, confidential truth verification led by decades of investigative excellence.

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Polygraph Services

When character matters profoundly in public safety roles, the pre-employment polygraph examination serves as a vital tool to select the best candidates who demonstrate unquestionable integrity and trustworthiness.

By uncovering hidden behaviors or inconsistencies that standard background checks may miss, the polygraph examination promotes honesty and helps identify risks to the community and agency. Our examiners stay at the forefront with cutting-edge equipment and ongoing advanced training to deliver the most accurate results.

This protects the public, reduces future liabilities from misconduct or breaches of trust, and the agency from costly legal and reputational consequences. Allow us to help you confidently select your best candidate with peace of mind.

Golden State Polygraph Examiners are also available for private matters such as infidelity, illegal drug use and family issues.

Public Safety

Specialized pre-employment examinations for police, dispatch, and corrections. Identifying risks to protect your agency's integrity.

Private Testing

Discreet testing for personal matters including infidelity and family issues. Handled with absolute confidentiality.

Business / EPPA

EPPA-compliant testing for high-trust private sector industries including security and pharmaceuticals.

Understanding the Polygraph

The Process & Science

The polygraph remains the most important scientific technology for credibility assessment (lie detection). While lies cannot be detected or measured in the same way as physical things, many studies have shown that when using modern, evidence-based techniques, a polygraph examination can achieve accuracy rates that are significantly greater than chance.

The polygraph works because lying during a test is associated with subtle, predictable changes in physiological activity (blood pressure, breathing, and skin conductance). Modern instruments perform test administration and data analytic tasks with a level of standardization previously unknown.

For technical standards, refer to the APA FAQ:

View APA FAQ Sheet
Cuong Phan

Cuong Phan
Lead Examiner & Owner

Professional Excellence & Integrity

Cuong Phan is a highly respected law enforcement professional with nearly 30 years of dedicated service in public safety and leadership development. A retired Police Lieutenant from the Santa Clara Police Department, he was frequently entrusted with high-level planning and the most technical assignments across patrol, investigations, and professional standards.

During his tenure, Cuong was selected by the Office of the Chief to serve as the Public Information Officer (PIO), where he was entrusted with highly confidential matters and served as the spokesperson with the media and community.

Prior to his time at Santa Clara PD, Cuong served as a CDCR Parole Agent in San Jose and East Palo Alto, where he supervised high-risk sex offenders and registered gang members as part of several specialized task forces.

Cuong’s expertise is backed by an elite academic and professional foundation, including a Master’s Degree from San Jose State University. He is a graduate of the prestigious CA POST Command College (Class 71), the Sherman Block – Supervisory Leadership Institute (Class 432), and the CA POST Executive Development Course series. He is also a graduate of the academically rigorous Marston Polygraph Academy.

Contact Us

Main Office

15325 Calle Enrique Suite #8
Morgan Hill, CA 95037

CPhan179@gmail.com
669-205-3240

Regional Service Areas

  • • Santa Clara County
  • • Monterey County
  • • Santa Cruz County
  • • San Benito County
  • • San Mateo County
  • • Alameda County

Mon - Thu: 9:00 AM - 4:00 PM

By Appointment Only

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