Forensic hair analysis for drugs is now more reliable and accurate.
2 citations
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February 2014 in “Journal of the European Academy of Dermatology and Venereology” High levels of prolactin in the blood can be linked to widespread hair loss.
Hair test results can be misleading due to external contamination, so they shouldn't be used alone to assess long-term drug use.
15 citations
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January 2008 in “Annales de Toxicologie Analytique” Hair test results can be misleading due to contamination, so they shouldn't be used alone to determine drug use.
1 citations
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August 2006 in “International forensic science and investigation series” Hair testing is a reliable method for detecting workplace drug use when done with proper sample preparation and confirmation.