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FAQ

How to Prepare for a Lie Detector Test in Chico | 2026 guide

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If you are facing a situation where your integrity is being questioned or trust has been shattered, the stress can be overwhelming. At California Polygraph & Investigation Services, we understand that the preparation process is just as critical as the exam itself to ensure a clear, forensic result.

To prepare for a lie detector test in Chico or our other Northern California locations, you must arrive well-rested, hydrated, and free from stimulants like caffeine or nicotine for at least 4 hours. Ensure you have a valid government-issued ID and have completed all intake documentation to facilitate a smooth, professional truth verification session.

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The Forensic Readiness Checklist

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Preparing for a Computer Voice Stress Analyzer (CVSA) or a traditional polygraph requires different physical approaches. While the polygraph measures physiological changes via sensors on the body, the CVSA measures the Microtremor in the human voice.

Physical & Mental Preparation

  • Avoid Stimulants: Do not consume coffee, energy drinks, or nicotine at least 4 hours before your appointment. These can artificially spike physiological markers.
  • Rest and Nutrition: Aim for 7–8 hours of sleep. Eat a light meal 2 hours prior; an empty stomach or a heavy, “food coma” state can interfere with focus.
  • Documentation: Bring a valid Photo ID. If your case involves legal or police reports, have those reference numbers ready for the pre-test interview.
  • The Why of Honesty: The pre-test interview is the time to clear your mind. If you are nervous, tell the examiner. Professional examiners distinguish between “general nervous tension” and “situational deception.”
Feature Polygraph (In-Person) CVSA (Remote or In-Person)
Primary Marker Heart rate, Sweat, Respiration Vocal Microtremors (FM frequencies)
Invasiveness Blood pressure cuff, sensors Microphone/Handset only
Location Chico Office Only Phone-based or In-office
Reliability Gold standard for field use Forensically reliable for private use*

As with all non‑polygraph technologies, California Evidence Code 351.1 applies. No method guarantees 100% accuracy.

Legal Standards & Health Caveats

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At California Polygraph & Investigation Services, we adhere to strict professional standards including ASTM and APA guidelines where applicable. In California, private truth verification is governed by specific statutes to protect all parties.

Medical and Legal Notice

  • Medications: Continue taking all physician-prescribed medications. However, please disclose any sedatives, blood pressure medications, or beta-blockers to your examiner, as these may impact the physiological data.
  • California Labor Code § 432.2: We strictly follow California law, which prohibits private employers from requiring a lie detector test as a condition of employment. All private exams we conduct are voluntary.
  • Accuracy Qualification: Our methods are validated for private use and are considered forensically reliable for private truth verification.

Disclaimer: As with all non‑polygraph technologies, California Evidence Code 351.1 applies. No method guarantees 100% accuracy.

FAQ

We provide localized service to Chico, Sacramento, Redding, Yuba City, Vallejo, and Santa Rosa. 

Frequently Asked Questions

Can I take a lie detector test over the phone? 

Yes, via Remote CVSA. This is a voice-based risk assessment tool used by California Polygraph & Investigation Services as one method of truth verification. You must be in a quiet room with a high-quality phone connection and no distractions.

Is the CVSA as accurate as a polygraph? 

The CVSA is framed as an additional layer of forensic analysis. While highly effective for remote applications, it is regulated differently than the polygraph. As with all non‑polygraph technologies, California Evidence Code 351.1 applies. No method guarantees 100% accuracy.

What if I am naturally a nervous person? 

Nervousness is expected. Our examiners in Chico are trained to establish a “baseline” of your normal speech and physiological patterns before the actual questioning begins.

How long does the entire examination process take?

Typically 90 to 120 minutes. This duration is required to comply with ASTM standards. It includes the mandatory pre-test interview (reviewing all questions), the instrumentation phase (data collection), and the immediate post-test analysis where you receive your results.

Can medications like blood pressure pills affect my results?

They can, but you should not stop taking them. Life-sustaining medications may dampen the Autonomic Nervous System, which could lead to an Inconclusive result, but they rarely cause a False Positive. Always disclose your medications to the examiner during your remote intake so the data can be analyzed accurately.

Pricing & Booking Process

We believe in transparent pricing for our Northern California clients. There are no hidden travel fees for exams conducted at our Chico, CA base.

Pricing Structure

  • In-Person Polygraph (Chico) Polygraph examinations start at $500, with pricing based on the type of exam, number of issues covered, and whether a formal written report is required.
  • Remote CVSA (Phone-Based): Private CVSA examinations start at 400 dollars, with final pricing based on the complexity of the case and time required for a thorough, defensible report. More involved issues, rush scheduling, or additional documentation may increase the fee, and all costs are discussed up front before booking.

How to Book

  1. Consultation: Call us to discuss your specific needs (infidelity, family matters, or private disputes).
  2. Scheduling: Choose between an in-person session in Chico or a remote CVSA session.
  3. Deposit: Secure your time slot with a discreet deposit.
  4. Examination: Complete your 90-minute session and receive initial findings.

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