The effectiveness of decontamination procedures used in forensic hair analysis

Mantinieks, D, Gerostamoulos, D, Wright, P and Drummer, O 2018, 'The effectiveness of decontamination procedures used in forensic hair analysis', Forensic Science, Medicine, and Pathology, vol. 14, no. 3, pp. 349-357.

Document type: Journal Article
Collection: Journal Articles

Title The effectiveness of decontamination procedures used in forensic hair analysis
Author(s) Mantinieks, D
Gerostamoulos, D
Wright, P
Drummer, O
Year 2018
Journal name Forensic Science, Medicine, and Pathology
Volume number 14
Issue number 3
Start page 349
End page 357
Total pages 9
Publisher Springer
Abstract Hair is a mainstream specimen used in forensic toxicology to determine drug use and exposure. However, the interpretation of an analytical hair result can be complicated by the presence of external drug contamination. Decontamination procedures are included in hair analysis methods to remove external contamination, but the capacity of these washes to completely remove contamination for all drugs is controversial. It is evident that there is no consensus on the most effective decontamination procedure, nor can decontamination procedures consistently remove external drug contamination to less than reportable cut-offs for all analytes. ∆9-tetrahydrocannabinol deposited from cannabis smoke is mostly removed by organic solvents, whereas ionizable drugs are more effectively removed by an aqueous wash. Organizations such as the Society of Hair Testing recommend a hair decontamination procedure should include both an organic and aqueous washing step, which is in accordance with the reviewed literature. Studies involving a systematic evaluation of various solvents have shown that the most effective organic solvent was methanol and the most effective aqueous solvent contained sodium dodecyl sulfate detergent. If future systematic studies can demonstrate similar findings, a consensus on the most effective decontamination procedure for forensic hair analysis may be established.
Subject Forensic Chemistry
Toxicology (incl. Clinical Toxicology)
Keyword(s) Hair analysis
External drug contamination
Decontamination procedures
DOI - identifier 10.1007/s12024-018-9994-6
Copyright notice © Springer Science+Business Media, LLC, part of Springer Nature 2018
ISSN 1547-769X
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