Drug test
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]
Drug Test Media
Example of a device used to screen urine for drugs. There is no line present at the benzodiazepine area, indicating a positive screen for this class of drugs. Other drugs, and the negative control (labelled "C"), are negative.
Breath test being used on a volunteer.
