Quest Hair Drug Test Collection Guide

Drug Test Analysis 2010;2;367. Routes of incorporation of drugs into hair Cooper G. Ann Clin Biochem 2011; 48:516 • Blood capillaries at the hair root bulb • Sebum • Sweat • External contamination. Diagrammatic representation of the growth of hair Month 1 Month 2 Month 3 Month 4 Month 5 Month 6 (now) Month 6 6 cm Month 5 5 cm Month 4 4 cm Month 3 3 cm Month 2 2 cm S Month 1 1 cm C A L ... ................
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