About Our Director & Examiners
View Our Professional Testing Site
View Our Expert Credentials
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View Our Various Types of Clients
View Our Client Testimonials
Contact Us & Request Info
Infidelity and Relationship Issues
Sexual Abuse Issues
Sex Offender Testing (PCSOT)
Criminal Cases and Attorney Services
Clear-Your-Name (For Falsely Accused)
Statement and Witness Verification
Theft - Employee/Employer (EPPA)
Theft - Private Issues
Fraud - Insurance/Medical/Financial
Substance Abuse and Addictions
Student and School Related Issues
Pre-Employment Applicant Screenings
Government and Law Enforcement
Customized Polygraph Tests
Schedule a Polygraph Test
How Polygraph Works
Signs a Person May Be Lying
Who Uses Polygraph
Polygraph In The News
About Voice Stress
How to Select an Examiner
Test Guidelines & F.A.Q.
Test Fees & Cancellation Policy
Terms and Conditions of Service
Download and Print PDF Forms
Northfield, IL Test Center
(Next to Skokie & Northbrook)
Download and Print PDF Forms
Driving Directions and Appointment Information for Northfield Test Center
Driving Directions & Info
Central Polygraph Service Full Color Brochure
General Brochure
Employee-Theft Polygraph Testing Information Packet (Businesses Only)
Employee Theft Packet
Pre-Employment Applicant Screening Questionnaire (Government Only)
Pre-Employment Questionnaire
Post-Conviction Sex Offender Questionnaire (Therapists & Probation Only)
PCSOT Questionnaire
Parental Consent Form for Examinees Under 18 Years of Age
Parent/Legal Guardian
Court Case Citations Regarding Admissibility of Polygraph
Court Case Citations
How to Select a Polygraph Examiner - Quality Assurance Checklist
Selecting an Examiner
