COCAINE - CONFIRMATION, HAIR

Reference Values Modification

Test code: 4383

PREVIOUS Reference values

CURRENT  Reference values

NEGATIVE: Less than 0.5 cocaine ng/mg hair

NEGATIVE: Less than 0.5 cocaine ng/mg hair                 Less than 0.05 benzoylecgonine ng/mg  hair                 Ratio benzoylecgonine/cocaine <0.05  hair (SAMHSA: The Substance Abuse and Mental Health Services. Administration y Department of health and human Services: Proposed revisions to mandatory guidelines for federal work- place drug testing programs, Federal Register 2004, 69, 19673–19732).

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