J. Larry Jerald, Certified Polygraph Examiner
Jerald Polygraph Services, LLC provides truth verification services to attorneys; post-conviction sex offender polygraph programs to probation officers and therapists; and criminal examinations for law enforcement agencies.

Larry Jerald became a certified polygraph examiner by the National Training Center of Polygraph Science in New York City in 1977.  He worked as a law enforcement officer in federal and local government for 35 years, retiring as Detective Bureau Chief with the rank of Major from the Marion County Sheriff's Office in Ocala, Florida. The Marion County Sheriff's Office is a large agency of over 800 employees.  Experience includes working as a polygraph examiner, polygraph supervisor, patrol deputy, patrol supervisor, detective and detective supervisor.  Primary experience is in the field of major crime investigations such as homicide and other crimes against persons.

Upon retirement, Larry Jerald began  private practice as Jerald Polygraph Services in February 2003.
Contact Information
Email :
Phone :
(352) 694-7501
Address :
Post Office Box 830926
United States
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