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    If Someone Was A Heavy User, Around 3-4 Grams A Day For The Past 10 Years And Has Now Quit For 106 Days Why Would A Hair Follicle Test Still Show Positive And How Long Can It Have This Result?

    My friend has been clean has passed UA and blood test but is still showing positive on hair.

    asked 1 year ago

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    Your hair is like a time vessel. They can find out everything you've ingested from the folicle to the tip of the hair. To start clean one would need to get a short hair cut. Hair grows about 1/4 inch per month.

    answered 1 year ago

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