Inquest Forensic Services


Interviewing & Interrogation

InQuest Forensic Services | Polygraph Services

InQuest Forensic Services (Pty) Ltd currently specialises in Polygraphy as an investigative tool. Polygraph examinations differ in type and can therefore be used for various reasons/situations. 

Polygraph types include:


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Case Specific
  • Case Specific Polygraph Examinations are used when a specific incident such as theft, fraud and robbery has occurred to remove suspicion from individuals not involved, as well as identify possible suspects and/or the perpetrator(s) of the incident under investigation
  • The examination can either take place once it is discovered that a crime has taken place to determine whether further investigation is necessary, or during an investigation to obtain additional information and/or corroborating evidence
Periodical/General Screening
  • Periodical/General Screening Polygraph Examinations is an excellent tool to equip business owners/management to determine employees’ general level of honesty and integrity, as well as ensure that the required level of honesty and integrity is maintained in the workplace
  • With Periodical Screening Polygraph Examinations, business owners can ensure that incidents of theft, fraud, syndicate activity, etc. do not occur, or that the frequency of such [and related] incidents is reduced
  • The examinations can be administered at random, or periodically (eg. quarterly, half yearly or annually)
Pre-Employment Screening/Vetting
  • Polygraph examinations can also be used to screen/vet potential employees prior to appointment to determine whether the candidate possesses the required level of honesty and integrity (particularly of value in the security and financial industries, as well as large companies)
  • A wide range of issues can be tested, including involvement in illegal substances, misconduct at a previous workplace and previous involvement in syndicate activities/serious crime, amongst others
  • Polygraph examinations focusing on infidelity are used to confirm, or disprove allegations of unfaithfulness towards a spouse/partner

Interviewing & Interrogation

Forensic Assessment Interview Technique (FAINT)

  • A FAINT is administered when a specific incident, such as theft, has taken place to eliminate individuals from a large pool of suspects, as well as obtain key information related to the issue under investigation
  • Case Specific Polygraph Examinations and FAINTS can be used in conjunction with one another

Interrogation of employees/suspects can take place after a polygraph examination to elicit additional information, if the examinee is found guilty or possesses any knowledge of the incident under investigation (*Take note that an additional fee may apply if interrogation is part of the client’s mandate)

If you require a service not listed above, feel free to contact us. InQuest Forensic Services (Pty) Ltd’s dynamic network of experts will go the extra mile to assist in your needs.