About Spectrum Polygraph Services

At Spectrum Polygraph Services, we provide professional, accurate, and confidential polygraph testing services in Los Angeles County and throughout Southern California. Our mission is to deliver reliable truth verification using proven techniques, advanced methodology, and a client-centered approach.

Why Clients Trust Spectrum Polygraph Services

Our clients rely on us for accurate, confidential, and professional polygraph examinations. With certified examiners, advanced technology, and a commitment to clear communication, we deliver results you can trust. Flexible scheduling and bilingual services ensure every client receives the support they need, when they need it most.
Certified Law Enforcement Examiners
Spectrum Polygraph Services is powered by a dedicated team of certified polygraph examiners. With years of specialized training and thousands of examinations conducted, our professionals ensure accuracy, consistency, and the highest standards of integrity. Whether handling individual cases or large-scale testing, our team is committed to delivering reliable results with professionalism and discretion.
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Advanced Polygraph Technology
We utilize the Lafayette Polygraph Instrument, one of the most trusted and widely used polygraph systems in the industry. This advanced technology allows our examiners to accurately record physiological data and conduct professional, reliable, and scientifically supported polygraph examinations.
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English & Spanish Exams (Bilingual)
We respect your privacy and offer discreet, confidential testing in both English and Spanish. Our flexible scheduling, including evenings and weekends, makes it easy to access our trusted services when you need them.
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APA-Accredited Examiner Training
Our examiners are trained at the Vollmer Institute of Polygraph, an APA-accredited institution, ensuring rigorous education and adherence to the latest scientific standards in polygraph methodology.
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PCSOT Certification for Specialized Testing
We are certified in Post-Conviction Sex Offender Testing (PCSOT) through Marston Polygraph Academy, equipping us to handle sensitive and complex cases with professionalism and care.
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Active APA Membership
As members of the American Polygraph Association, we uphold strict ethical guidelines and stay current with industry advancements, ensuring reliable and confidential service for every client.

Certified Polygraph Examiners

Our examiners have received specialized training from some of the most respected organizations in the polygraph, investigative interviewing, and law enforcement professions, including:

• Phoenix Polygraph Academy (PPA)
• PEAK Credibility Assessment Training Center (PEAK CATC)
• American Polygraph Association (APA)
• California Association of Polygraph Examiners (CAPE)
• Marston Polygraph Academy
• John E. Reid and Associates (Reid Technique® Training)
• Behavior Analysis Training Institute
• Statement Analysis® Training Programs
• Los Angeles Police Department (LAPD)
• Los Angeles High Intensity Drug Trafficking Area (LA HIDTA) Training Center
• Joint Regional Intelligence Center (JRIC)
• Additional federal, state, and local law enforcement training programs

Through ongoing professional development, advanced coursework, continuing education, and participation in nationally recognized training programs, our examiners remain current with the latest research, polygraph methodologies, investigative interviewing techniques, behavioral analysis, statement analysis, and industry best practices.

This diverse training background enables us to provide professional, accurate, and objective polygraph examination services for private individuals, attorneys, businesses, and government agencies throughout Southern California.

Validated Polygraph Testing Formats

To ensure the highest level of accuracy and reliability, we utilize validated testing formats trusted by law enforcement and the private sector. Our examiners select the most appropriate methodology based on each case type—diagnostic or screening—delivering results you can trust.
  • Air Force Modified General Question Test (AFMGQT)
  • Federal You-Phase (Bi-Zone) Technique
  • Directed Lie Comparison Test (DLCT)
  • British One Issue Screening Test (BOST)
  • Directed Lie Screening Test (DLST)
  • Utah Comparison Question Technique (Utah CQT)

Southern California Coverage

We proudly offer polygraph examinations in both English and Spanish, ensuring every client feels comfortable and understood. Our experienced examiners are fluent in both languages, providing clear communication and peace of mind throughout the process.