1 Source Private Investigations - Indiana - 219.381.8685 - Illinois - 708.251.0111

Polygraph Examinations
Lie Detector Testing

219.381.8685

At 1 Source Private Investigations we offer comprehensive services that makes choosing us to represent you easy. Of all the various services we offer, there are none more important than getting to the truth. It does not matter whether you are an employer, legal concern, employee, or any other wrongfully accused individual, we will treat you all with respect and fairness. 

Over the years there has been much debate over the use and validity of polygraph testing. Historically, no other practice has been as scrutinized as the administration of lie detector tests, and their admissibility in the legal process.

It is noteworthy to state that many studies have been done that rank polygraph examinations statistically to other forms of testing.

Below is a quick look at the most common comparisons:

POLYGRAPH 95%
SEROLOGY 85%
BALLISTICS 76%
HAND WRITING 72%
FINGERPRINTS 59%
EYEWITNESS 54%

1 Source Private Investigations is not a polygraph examiner. We have investigated the market of polygraph examiners in Northwest Indiana and aligned ourselves with a firm that we feel has unparalleled credentials.

"The 1 Source PI Advantage"
  • We make all the arrangement's, and accompany the individual(s) to the testing location for its duration.
  • We handle the fee's associated with testing.
  • By using our services there are benefit's toward achieving the intended purpose: 
    1. We maintain custody and control per our client's instructions to preserve the integrity of the report.
    2. As intermediary's we insulate the client from the perception of receiving a favorable test. 
    3. We provide pre-test and post-test investigative support.
    4. In many circumstances our participation may alleviate some of the stress associated with the testing process. 

Our polygraph examiners haves established backgrounds working for the Department of Children and Family Services, law enforcement agencies, prosecutors, defense attorneys, probation, parole, CPS agencies, DCS agencies, therapists and businesses, as well as private individuals. They have pioneered procedures and testing for sexual offenders, and have authored manuals in the field. 


The following is a detailed list of our areas of service:

  • Allegations of Child Abuse
  • Allegations of Official Misconduct
  • Allegations of Public Corruption
  • Allegations of Sexual Misconduct
  • Clear the Wrongfully Accused
  • Criminal Investigations
  • Civil Rights Matters
  • Domestic Disputes
  • Equal Opportunity Matters
  • Hidden Assets
  • Fidelity Issues
  • Insurance Fraud
  • Law Enforcement Employment Screening
  • Narcotics Investigations
  • Property Crimes
  • Probation and Parole Management and Monitoring
  • Sex Crimes Investigations
  • Sex Offender Management and Monitoring
  • Sexual Harassment
  • Sex Offender Testing
  • Verify Statements and Information
  • Violent Crimes Investigations
  • White Collar Crimes


*Spanish speaking polygraph examiners are available.


CALL 219-.381.8685 FOR A FREE CONFIDENTIAL CONSULTATION

1 Source Private Investigations
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PO Box 927
Griffith , IN , 46319 USA
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Phone 2193818685
Fax 8667167821
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