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Hair drug testing
Jul 6 2010, 10:46 AM EDT
Hair drug testing measures the drug molecules embedded inside the hair shaft, eliminating external contamination as a source of a positive result. Since hair growth is fed by the bloodstream, the ingestion of drugs of abuse is revealed by analyzing a small sample of hair. HairConfirm test results cannot be altered with shampoos, bleaches or other external chemicals.
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Drug test
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