Effective client abstinence monitoring via drug testing is ...

False/positive results . Amphetamines - Includes: _____, decongestants, medication for Parkinson’s . Cocaine ... can yield false positive results for: imipramine, papaverine, rifampin. ... Urine Testing General Precautions: should be taken to ensure that a urine sample cannot be altered or diluted during the collection or procedure and that ... ................
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