Drug test
technical analysis of a biological specimen to determine the presence or absence of drugs or their metabolites From Wikipedia, the free encyclopedia
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A drug test is an analysis of a biological specimen to find drugs in a person's system. Urine, hair, blood, breath, sweat, and saliva can be tested. Sometimes these tests are done for employment reasons. Sometimes they are done during sports to see if a sportsperson is using illegal steroids.[1]
References
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