1. Dear Drugs-Forum readers: We are a small non-profit that runs one of the most read drug information & addiction help websites in the world. We serve over 4 million readers per month, and have costs like all popular websites: servers, hosting, licenses and software. To protect our independence we do not run ads. We take no government funds. We run on donations which average $25. If everyone reading this would donate $5 then this fund raiser would be done in an hour. If Drugs-Forum is useful to you, take one minute to keep it online another year by donating whatever you can today. Donations are currently not sufficient to pay our bills and keep the site up. Your help is most welcome. Thank you.
    PLEASE HELP
    Dismiss Notice

Propylhexedrine and test for amphetamine

Discussion in 'Drug testing discussion' started by Myzel, Jan 27, 2007.

  1. Myzel

    Myzel Silver Member

    Reputation Points:
    24
    Joined:
    Aug 24, 2006
    Messages:
    75
    Male from U.S.A.
    Curious do any swims think that Propylhexedrine could show up as a positive on a standard 5 panel test? Swims has looked and compared the structures of each compound and doesn't think so but could be wrong. Hope swiy can shed some educated light on this .
     
  2. Isochrist

    Isochrist Newbie

    Reputation Points:
    14
    Joined:
    Mar 28, 2005
    Messages:
    82
    33 y/o Male from U.S.A.
    In the past, SWIM used some propylhexadrine while on probation. SWIM was drug tested 3 days later and was positive for methamphetamine.

    The urine sample was subsequently sent to a GC/MS (after a 30$ fee and some hell-raising), and then came back negative for meth.

    So yes, propylhexadrine will cause a false positive on an EMIT test, but not on a GC/MS.
     
  3. Myzel

    Myzel Silver Member

    Reputation Points:
    24
    Joined:
    Aug 24, 2006
    Messages:
    75
    Male from U.S.A.
    OK much thanks. That is the same situation swim was worried about .. Swim also figured so and swim is not the type to be the first to test it out. Mainly because swim would probably go away for a long while and it's just not worth it
     
  4. Isochrist

    Isochrist Newbie

    Reputation Points:
    14
    Joined:
    Mar 28, 2005
    Messages:
    82
    33 y/o Male from U.S.A.
    Glad I could be of help to you.

    SWIM went through the same thing when looking at the structure of propylhexadrine. SWIM figured because it was a cyclohexyl group instead of a phenyl group that it would of been broken down into something that wouldn't show up positive for meth. Apparantly that's not the case.

    Does anyone know exactly what propylhexadrine / amphetamine get metabolized to?
     
  5. Myzel

    Myzel Silver Member

    Reputation Points:
    24
    Joined:
    Aug 24, 2006
    Messages:
    75
    Male from U.S.A.
    That was another reason also swim was so interested in that because if swiy looks at the structures and they look the same but the cyclohexyl ring swim would think make a big difference. Just like the alpha and the beta on the hydroxy makes such a big difference.. Also think about ephedrine when it breaks down it does not cause positive test.
     
  6. Isochrist

    Isochrist Newbie

    Reputation Points:
    14
    Joined:
    Mar 28, 2005
    Messages:
    82
    33 y/o Male from U.S.A.

    Actually SWIM was under the impression that ephedrine could cause a false positive.
     
  7. Myzel

    Myzel Silver Member

    Reputation Points:
    24
    Joined:
    Aug 24, 2006
    Messages:
    75
    Male from U.S.A.
    Maybe, but swim has never failed a drug test after consuming ephedrine. Swim thinks the key word here is "could" . Swim thinks that with the new test they have now that ephedrine will not cause a false positive...Also that is why is surprises swim that propylhexadrine causes false positives. But swim is not going to take the chance at least with propylhexadrine
     
  8. Isochrist

    Isochrist Newbie

    Reputation Points:
    14
    Joined:
    Mar 28, 2005
    Messages:
    82
    33 y/o Male from U.S.A.
    Yeah, I would imagine if SWIM had used the propylhexadrine according to the directions, that it most likely wouldn't have caused the false positive.