• Criminal Defense

  • Identify the Guilty

  • Clear the Wrongfully Accused

  • Verify Information & Statements

  • Violent Crimes

  • Property Crimes

  • Sex Crimes & Allegations of Sexual Misconduct

  • Sexual Harassment/ Allegations

  • Narcotic Investigations

  • Hidden Assets

  • Domestic Disputes

  • Infidelity Issues

  • Insurance Fraud

  • Allegations of Child Abuse

  • Allegations of Official Misconduct

  • Allegations of Public Corruption

  • Theft and fraud Investigations

  • Missing Persons

  • Law Enforcement, Government & Security Screening

  • Drug Usage by Athletes

  • Investigating Malicious and False Allegations

  • Eliminating Suspects

  • Testing Informants to Determine the Veracity of Information 

  • Narrowing the Focus of Inquiry

NOTE: For suspected employee thefts, see the requirements of the Employee Polygraph Protection Act (EPPA) of 1988 - click link below

How does a polygraph work?

A polygraph instrument records changes in a person’s blood pressure, pulse rate, galvanic skin response (sweat gland activity), and upper and lower breathing patterns. It does not matter if the person being tested is nervous during the examination – that is very common and expected. The polygraph records significant changes (physiological changes) from the examinee when questions are answered. A person who has the intent to deceive in regards to a specific question will activate his/her Sympathetic Nervous System as a self-defense mechanism when that specific issue question is asked on the test. The SNS activation will cause recognizable changes in one or more of the physiological responses


How long will it take?

The examination will take approximately 90 to 180 minutes due to the extensive polygraph examination process required. If more questions must be asked, another polygraph examination will be designed and conducted following the first one. The second one will be conducted at later date. This usually adds to the time and cost involved. An individual can only produce readable polygraph charts for a limited period of time. After this time has expired, it is impossible to generate a conclusive polygraph examination and any further examinations must be scheduled for a different day. After the exam is complete and the test has been evaluated and scored, results will be provided before leaving. A written report will be provided by mail or sent through a secure file share program digitally.


As an attorney, how can this benefit my client?

As an attorney, in both criminal and civil actions, it makes sense to use all available tools to assist you. In tort actions, the polygraph is frequently used to test key fact issues that cannot be corroborated by any other means. A polygraph examination can be used to test the reliability of memories as well as truthfulness of statements.

Successful criminal defense often includes the use of forensic polygraph examinations of suspects and witnesses. Certainly, if the prosecution offers a polygraph examination to your client, you should have confidence in your client’s ability to pass a law enforcement polygraph examination. A polygraph examination is an excellent predictor of how your client will perform in trial, at depositions even in front of public forums.

North Fulton Polygraph has the highest standards in forensic polygraph examinations.

What Does a Polygraph Examination Consist of?


Pre-Test - In the pre-test phase, the polygraph examiner will complete required paperwork and talk with the examinee about the test. During this period the examiner will discuss and review the questions to be asked, discuss the issue being tested on, and familiarize the examinee with the testing procedure and the polygraph instrument.


In-Test - The in-test (chart collection) phase takes place in a quiet room with no one else present to distract the examinee. This is extremely important. The polygraph examiner will attach the components to the person and then ask previously discussed questions designed to be answered yes or no. Data is collected via the sensors/ components and are recorded in the form of polygraph charts. Polygraph examiners may use conventional instruments, sometimes referred to as analog instruments, or the more modern computerized polygraph instruments. National Forensics and Polygraph uses the latest in computerized instruments.


Post-Test - Following the in-test phase, the polygraph examiner will analyze the data on the charts and render an opinion as to the truthfulness of the person taking the exam. The examiner, when appropriate, will offer the examinee an opportunity to explain physiological reactions in relation to one or more questions asked during the polygraph examination.