Drug test Drug test A drug test is a technical analysis of a biological specimen, for example urine, hair, blood, breath, sweat, and/or oral fluid/saliva — to determine the presence or absence of specified parent drugs or their metabolites. Major applications of drug testing include detection of the presence of performance enhancing steroids in sport, employers and parole/probation officers screening for drugs prohibited by law (such as cannabis, cocaine, methamphetamine, and heroin) and police officers testing for the presence and concentration of alcohol (ethanol) in the blood commonly referred to as BAC (blood alcohol content). BAC tests are typically administered via a
Drug user Drug user The term drug user is often used to refer to a person who consumes an illegal psychoactive substance. The term "user" is typically employed to refer to someone who is a drug user, abuser, or addict. Drug users are sometimes referred to as "heads", depending on the drug used, i.e., pothead, hophead, crackhead, etc. People have used drugs for thousands of years. Evidence of human use of opium has been found in neolithic and Bronze Age archeological sites in Europe, and an opium pipe from 1,200 years ago has been unearthed on the island of Cyprus. The psychoactive