Substance abuse detection is the "detection of drugs that have been abused, overused, or misused, including legal and illegal drugs. Urine screening is the usual method of detection."[1] Hair may also be tested.[2]
In one study, the single question "How many times in the past year have you used an illegal drug or used a prescription medication for nonmedical reasons?" detect substance abuse when the response is one time or more with accuracy of:[3]