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

G Skopp, P Strohbeck-Kuehner, K Mann… - Forensic science …, 2007 - Elsevier
Hair analysis has shown great potential in the detection and control of drug use. Whether an
assay is of quantitative value roughly corresponding to the amount of drug consumed, is still
a matter of debate. The present investigation was aimed at a possible relationship between
the cannabinoid concentration in hair and the cumulative dose in regular users of cannabis.
Hair samples from the vertex region of the scalp were obtained from 12 male regular users
of cannabis, and 10 male subjects with no experience of cannabis served as controls. None …