Deposition of cannabinoids in hair after long-term use of cannabis
Deposition of cannabinoids in hair after long-term use of cannabis.

Cannabinoid concentrations in hair from documented cannabis users.
Cannabinoid concentrations in hair from documented cannabis users.

Differentiation between drug use and environmental contamination when testing for drugs in hair
ScienceDirect - Forensic Science International : Differentiation between drug use and environmental contamination when testing for drugs in hair


Evaluation of the IDS One-Stepā?¢ ELISA kits for the detection of illicit drugs in hair
ScienceDirect - Forensic Science International : Evaluation of the IDS One-Step™ ELISA kits for the detection of illicit drugs in hair

Deposition of cannabinoids in hair after long-term use of cannabis
ScienceDirect - Forensic Science International : Deposition of cannabinoids in hair after long-term use of cannabis

Are cannabinoids detected in hair after washing with Cannabio shampoo?
Are cannabinoids detected in hair after washing wi... [J Anal Toxicol. 1999] - PubMed result

Weather-induced changes in cannabinoid content of hair
[Weather-induced changes in cannabinoid content of... [Arch Kriminol. 2003 Jan-Feb] - PubMed result

Practical Challenges to Positive Drug Tests for Marijuana
Practical Challenges to Positive Drug Tests for Marijuana -- ElSohly 49 (7): 1037 -- Clinical Chemistry

Hope that helps!