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How soon after use can a drug be detected in hair?

April 26, 2017detected drug hair Soon

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How soon after use can a drug be detected in hair?

7 Answers

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It takes approximately 4-5 days from the time of drug use for the affected hair to grow above the scalp. Body hair growth rates are generally slower and cannot be utilized to determine a timeframe of drug use.

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It takes approximately 5-7 days from the time of drug use for the portion of the hair containing that drug to grow above the scalp.

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It takes approximately 4-5 days from the time of drug use for the affected hair to grow above the scalp. Body hair growth rates are generally slower and cannot be utilized to determine a specific timeframe of drug use. Therefore any positive result from body hair would only correlate to drug use at some indeterminable time (generally within one year).

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Drug (and/or metabolite) can be detected approximately seven to 10 days from the time of drug use. This is the time in which the affected hair grows from the follicle to emerge above the scalp.

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It takes approximately 5-10 days from the time of drug use for the affected hair to grow above the scalp.