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    johnvick's Avatar
    johnvick Posts: 1, Reputation: 1
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    #1

    Aug 25, 2012, 08:54 PM
    90 day hair follicle test
    I've been clean since June 30th Smoke crack 1 time August 25th Will I pass a 90 day Hair follicle test November the first
    AGB8485's Avatar
    AGB8485 Posts: 5, Reputation: 1
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    #2

    Aug 25, 2012, 09:24 PM
    I'm taking a hair follicle test on Monday and I took one hit off a joint 2 months ago (before that I hadn't smoked weed in 2 years), I asked them if it would show up and they said no... apparently only chronic use will show up... not one time use.
    DrBill100's Avatar
    DrBill100 Posts: 3,241, Reputation: 502
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    #3

    Aug 25, 2012, 10:00 PM
    Quote Originally Posted by AGB8485 View Post
    I'm taking a hair follicle test on Monday and I took one hit off of a joint 2 months ago (before that I hadnt smoked weed in 2 years), I asked them if it would show up and they said no...apparently only chronic use will show up...not one time use.
    That is true. Infrequent use of marijuana does not show up in hair drug testing. THC has the lowest rate of incorporation into hair of all drugs requiring sustained use across a period to rise above the level of detection.

    Yuji Nakahara (1999) Hair analysis for abused and therapeutic drugs. Journal of Chromatography B, 733 (1999) 161–180, p. 174
    DrBill100's Avatar
    DrBill100 Posts: 3,241, Reputation: 502
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    #4

    Aug 25, 2012, 10:05 PM
    Quote Originally Posted by johnvick View Post
    I've been clean since June 30th Smoke crack 1 time August 25th Will I pass a 90 day Hair follicle test November the first
    Cocaine has the highest rate of incorporation into hair of all drugs. The only way it would not be detected is if the amount smoked does not rise above the level of detection (test cutoff). However, this is the drug most apt to be detected in a hair test.

    Yuji Nakahara (1999) Hair analysis for abused and therapeutic drugs. Journal of Chromatography B, 733 (1999) 161–180, p. 174
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