Hair follicle drug testing represents a method of detecting drug use by analyzing a hair sample. This testing method boasts a longer detection window compared to urine or blood tests, potentially revealing drug use patterns spanning several months. For instance, while a urine test might only detect drug use within the past few days, a hair follicle test can potentially detect drug use from the past 90 days, depending on the length of the hair sample.
The use of hair follicle testing in the transportation industry has been debated, with proponents citing its enhanced ability to detect drug use and improve safety. Historically, urine drug testing has been the standard, but some companies have considered or implemented hair follicle testing to augment their screening processes. The increased detection window offers a more comprehensive view of an individual’s drug use habits, which can be deemed beneficial for ensuring a safe working environment, particularly in safety-sensitive roles.