Drug testing

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The most general method of drug screening is urine testing.

It analyzes the drug testing for urine, blood, saliva, hair, and sweat for the presence of one or more illicit or specified substances. Amphetamines, methamphetamines, benzodiazepines, barbiturates, marijuana, cocaine, opiates, PCP, methadone, nicotine, and alcohol are among the drugs tested.