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Louisiana.gov > DPS > Louisiana State Police > Sections of LSP > CID > Polygraph Services

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About Us

Polygraph Services

The purpose of Louisiana State Police Polygraph Services is to determine a person’s Psycho-physiological Detection of Deception in regards to analysis of collected data by means of the polygraph instrumentation.

The instrumentation used by Louisiana State Police Polygraphists records visually, permanently and simultaneously, the cardiovascular pressure and pulse patterns, respiration patterns and variations in galvanic skin resistance.

Louisiana State Police Polygraphists maintain their certifications by meeting standards set fort by the Louisiana State Polygraph Board.

The Criminal Investigations Division has two full-time, commissioned State Police Polygraphists located in Region 1 and Region 2, respectively. State Police Polygraphists conduct Department of Public Safety Pre-Employment Examinations, Administrative Examinations, and Criminal Investigation Examinations for the Louisiana State Police and as requested by other law enforcement agencies.