International Polygraph Examiner​

Former Federal Examiner
U.S. Department of Justice | U.S. Department of State
Serving Clients Worldwide
Former DEA Intelligence Operations Director

International Polygraph Examiner

With international credentials and worldwide experience, John S. Swartz, is the Texas based examiner who has served the courts, law firms, corporations, hearing officials, multiple client companies and countless other decision makers worldwide for over thirty years. From sex offenders to Capital Murder, he is a former examiner at the United States Department of Justice, and he frequently serves as the authoritative expert witness in state and Federal courts. He is the first choice of Texas Criminal Court Judges..

Polygraph Examiner
Polygraph Examiners

Federal Testing Methodology

Mr. Swartz and his associates employ state of the art polygraph methodology blending the most validated Federal polygraph testing formats with computerized polygraph instrumentation.

Low Profile Interviews
All of our polygraph interviews are conducted in a professional, low profile, non-accusatory manner known as non-confrontational information elicitation. Our office environment is ideally suited for every type of examination. Appointments can be scheduled at virtually any time during a weekday. When required, evening and weekend testing is available. Examination results are immediate, as are our comprehensive, narrative reports.

  • 2015

    Senior Polygraph Examiner
    U.S. Department of State

  • 2012

    Retired Polygraph Examiner
    U.S. Department of Justice

  • 2012

    Retired Polygraph Examiner
    Drug Enforcement Administration

  • 2010

    Advisor and Consultant
    Office of the Chief and Command
    Legal Staff Houston Police Department

  • 2008

    Examiner and Consultant
    NBC News/Dateline

  • 2007

    Member Post Convictions Sex Offender Committee
    American Polygraph Association

Worldwide Polygraph-Testing

John Swartz travels worldwide for his many clients and can provide international field testing at any time. John’s international experience includes directing DEA Intelligence Operations in Bolivia where he was stationed at the United States Embassy in La Paz, Bolivia where he was the United States Government’s only examiner stationed in South America. He was certified as a Federal examiner for the United States Department of Justice. from 1992 to 1994. He has also served on assignments in Thailand, Malaysia, Hong Kong, Taiwan, Mexico, Ecuador, Peru, Colombia, Argentina, Chile and Brazil.

Working hours

Monday - Friday
9am - 5pm


440 Louisiana
Suite 900
Houston, TX 77002


[email protected]