Description
Drug abuse test interpretation involves understanding positive, negative, and invalid results, noting that initial screenings often need confirmatory lab tests (like GC-MS) for accuracy, as false positives from medications or foods can occur. A positive result means a drug or metabolite was found above a cutoff level, suggesting use but not necessarily impairment, while negative means below the threshold. Invalid results require sample retesting.
*AMPHETAMINES, *BARBITURATES. *COCAINE, *BENZODIAZEPINE, *MORPHINE / OPIATIES, *MARIJUANA / HARSHISH




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