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    mbsi's Avatar
    mbsi Posts: 3, Reputation: 1
    New Member
     
    #1

    May 6, 2012, 11:35 AM
    How often do you have to smoke marijuana for it to show up in hair test?
    I have only smoked 2 times in 16 mon. Once 2 mon ago once 2 weeks ago. Both times were only 2 hits. I just did a hair test. Will I pass?
    Curlyben's Avatar
    Curlyben Posts: 18,514, Reputation: 1860
    BossMan
     
    #2

    May 6, 2012, 11:36 AM
    Depends on the limits.
    DrBill100's Avatar
    DrBill100 Posts: 3,241, Reputation: 502
    Ultra Member
     
    #3

    May 6, 2012, 12:56 PM
    Quote Originally Posted by mbsi View Post
    I have only smoked 2 times in 16 mon. Once 2 mon ago once 2 weeks ago. both times were only 2 hits. I just did a hair test. Will i pass?
    It would be very unusual if you didn't. With the exception of cocaine, hair testing usually doesn't detect infrequent use of most drugs. That is particularly true for THC/THC-COOH as these marijuana metabolites have a very low incorporation rate into hair - urine is a far superior matrix for detecting use.

    If you had only 2 hits even within days of the test the chance of detection is virtually nil.

    Ref.

    Huestis, NIH, 2007 Cannabinoid Concentrations in Hair from Documented Cannabis Users
    Musshoff & Madea (2006)
    Auwater, etal (2010)
    mbsi's Avatar
    mbsi Posts: 3, Reputation: 1
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    #4

    May 10, 2012, 07:47 AM
    Quote Originally Posted by mbsi View Post
    I have only smoked 2 times in 16 mon. Once 2 mon ago once 2 weeks ago. both times were only 2 hits. I just did a hair test. Will i pass?
    Hair test came back negative
    steezen24's Avatar
    steezen24 Posts: 1, Reputation: 1
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    #5

    Aug 29, 2012, 02:00 AM
    Did you do anything to make sure you tested negative? Like shampoo your hair with a detox shampoo or using a method off the internet/

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