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Definition of Drug test

Drug test: An examination of biologic material (such as urine, hair, saliva, or sweat) to detect the presence of specific drugs and determine prior drug use. Drug tests may be performed to detect illicit drug use as well as the use of drugs and substances not permitted in specific occupations or athletic competitions. Also known as drug screen.

Source: MedTerms™ Medical Dictionary
http://www.medicinenet.com/script/main/art.asp?articlekey=89631
Last Editorial Review: 9/20/2012

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