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.
Hair test results can be misleading due to external contamination, so they shouldn't be used alone to assess long-term drug use.
June 2014 in “Toxicologie analytique et clinique/Annales de toxicologie analytique” Hair analysis can be unreliable due to external contamination and varying drug concentrations.
64 citations
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April 1972 in “American Journal of Clinical Nutrition” Hair chromium levels reflect nutritional status after standard washing.
December 2002 in “International Journal of Cosmetic Surgery and Aesthetic Dermatology” No significant link was found between male pattern baldness and Pityrosporum fungi.