Drug testing was initially introduced in 1989 with the Department of Transportation (DOT) taking the initiative in countering the alarming number of cases of drug abuse in workplaces. With the introduction of regulations to ensure a drug free working environment the drug abuse in workplaces has gone down substantially.
The federal drug testing program focuses on urine drug testing. A chain of custody form is used to ensure the drug testing process integrity. The analysis of the urine is first processed with a general drug screening test for the presence of illicit drug; then, if the initial employee drug |