Sweat/skin patch drug testing is one of the only ways to continuously monitor for drug use. With this method, a patch is attached directly to an individual's skin. The patch is able to detect traces of drugs in the person's sweat.

A hair follicle drug test may focus on detecting one specific drug in the hair or on detecting several substances in a hair follicle drug panel. One commonly used hair follicle drug panel looks for evidence of the use of five drugs or drug classes: marijuana, amph…

This test measures the breath alcohol concentration which correlates with blood alcohol concentration. The test is performed using an evidential breath testing device. (EBT) For DOT testing, the Evidential Breath Testing (EBT) device must be on the NHTSA conformin…