Prolonged Occurrence of Cocaine In Human Saliva and Urine after Chronic Use

Cocaine was detected by immunoassay in saliva and urine of chronic cocaine addicts for 5–10 days during abstinence. Confirmation by a less sensitive but highly specific GC/MS assay of unmetabolized cocaine was successful in saliva through the first 24 h of collection and for the initial 4–5 days in...

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