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Can I collect a longer sample to screen for a longer period of time?

April 26, 2017collect longer period sample screen time

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Can I collect a longer sample to screen for a longer period of time?

1 Answer

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10 Posted

No, the lab only tests the first 1.5″ (4 cm) of hair and will trim the sample accordingly. That is why it is imperative to orient the sample in the collection container with the root end of the hair in the correct place. If the sample is reversed, then the most recent drug use will not be present if the hair sample requires trimming.