Lie Detector Testing for Los Angeles County & Ventura County

Los Angeles Polygraph Test

polygraph testing VenturaSearching for Polygraph Test Ventura or Los Angeles Polygraph Testing? Look no further.

All of Doerner Investigations Polygraph examiners are current active duty and retired law enforcement. They are all current or retired polygraph examiners in one of the largest Law Enforcement agency’s in the country. Doerner Investigations is proud to be able to offer their services to the public on an off-duty basis.

How Does The Polygraph Work?

The polygraph acts like a recorder; its instruments record physiological changes occurring in the body while the examiner asks questions. As the person is questioned about certain events or an incident, the examiner records and monitors the changes in the person’s blood pressure, heart rate, respiratory rate, and electro-dermo activities.

The process includes three phases:

  1. The pre-test wherein the examinee and the examiner become acquainted, as there is a chance for the examinee to learn about the equipment and how it works. Exact questions that will be asked during the test are agreed upon at this time.
  2. The equipment is attached to the person being tested and the test begins. Following all instructions is very important.
  3. In the final, post-test phase, the data is reviewed with the person tested.

The polygraph examination is used by law enforcement agencies, prosecution and defense attorneys, as well as by companies and corporations. Research reveals that polygraph examinations show between a 90-95% accuracy rate if administered by a qualified examiner.

We take polygraph examinations very seriously. The examination results can potentially impact a person’s relationship, employment, or the results of a civil or criminal matter. Polygraph testing, including the pre-test interview, may take between 1.5 to 4 hours.

Polygraph Instructions for participants:

  1. Please refrain from ingesting alcoholic beverages or illegal substances for 24 hours prior to the examination.
  2. If you take prescription medications, please take them as prescribed by your physician.
  3. If you have uncontrolled high blood pressure, or a pre-existing heart condition, please consult with your physician prior to the examination to ensure that you are physically able to take the exam.

* All employee screening polygraph examinations are conducted in full compliance with the Employee Polygraph Protection Act of 1988.

For peace of mind, call (213) 910-4609

CA PI #27737