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On drug analysis in hair. III. Alterations of the opiate and cocaine content in hair of drug addicts after a single bleaching or permanent wave application

Rechtsmedizin, ISSN: 0937-9819, Vol: 7, Issue: 4, Page: 113-116
1997
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Hair samples collected from drug addicts (n = 25) were analysed for opiates and cocaine by GC/MS. A decrease in drug concentration was observed even after a single bleaching or permanent wave application. The stability of the drug molecules in hair seemed to be different and cocaine was less affected than morphine or 6-acetylmorphine. When drug concentrations were low, the drug content often declined below the detection limit after cosmetic treatment. In hair samples which showed a drug content above 2 ng/mg hair the qualitative detection of drugs was regularly successful. However, a distinct rule could not be established mainly due to influences of the individual hair matrix.

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