Which Physicochemical Variables Affect Drug Incorporation into Hair

Which Physicochemical Variables Affect Drug Incorporation into Hair  

The amount of drugs incorporated into hair depends on a variety of factors (1) the concentration of drugs in hair increases with the concentration of the exposure solution and the time of exposure (2) the concentration of drugs in hair decreases 

Concentrations of cocaine in the hair of family groups. Cocaine was used by all adults. 

Effect of concentration on the incorporation of cocaine into hair. Two types of hair were exposed to cocaine for 1 h and were dried overnight before extraction. (From Blank, D. L. and Kidwell, D. A., Forensic Sci. Int., 63, 145, 1993.) 

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