Since 1981, Truth Detection Laboratories
has provided polygraph testing for law enforcement agencies, private parties and law firms
. TDL welcomes your questions concerning polygraph testing and its potential use as an investigative tool. Call us for a confidential, no-obligation consultation to help you decide whether polygraph testing is an appropriate solution to your particular situation. For over 70 years
, polygraph testing has been used by law enforcement entities and government agencies as an investigation tool.