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Discussion => Newbie discussion => Topic started by: comingdown on September 30, 2013, 05:09 am

Title: How Long Is 4-FA Detected In Urine?
Post by: comingdown on September 30, 2013, 05:09 am
I'm assuming that since it's an amphetamine, I should go by the detection time of that, which is 2-5 days. I just want to make sure and see if anybody had any experience. The name of the company doing the urine test is Pharmatech, INC. if that makes any difference. Professional lab.
Title: Re: How Long Is 4-FA Detected In Urine?
Post by: comingdown on September 30, 2013, 03:09 pm
please help
Title: Re: How Long Is 4-FA Detected In Urine?
Post by: asianboy on September 30, 2013, 07:33 pm
It isn't detectable as far as I know.
Title: Re: How Long Is 4-FA Detected In Urine?
Post by: comingdown on September 30, 2013, 08:55 pm
It isn't detectable as far as I know.
Thank you for responding, but do you have a source for this?
Title: Re: How Long Is 4-FA Detected In Urine?
Post by: asianboy on September 30, 2013, 08:58 pm
The Wikipedia page says, "Regarding the metabolic fate of 4-FA, it is likely excreted from the body entirely unchanged. The C-F bond at the 4-position on the phenyl ring likely resists deactivation in the liver by cytochrome P450 oxidase." Tests do not normally test for 4-FA.

I hope this helps.
Title: Re: How Long Is 4-FA Detected In Urine?
Post by: Agonist on September 30, 2013, 09:09 pm
what about monoamine oxidase (MAO)?  i dont see where 4 fa would  be immune to oxidation by MAO.

To the OP, best bet is to check erowid and bluelight.  if the info is not in either of those to places, then consider it unknown for all intents and purposes.