dxm turns out to be pcp on tests

i have read that you can get a false positive for pcp if you use dxm recreationally.
Does anyone know how long dxm stays in your system or pcp?

I know that both DXM and PCP are classified as dissociatives, but I think that's as far as their relation goes. I doubt that Dextromethorphan would come up as a false positive for PCP, because then anyone who took cough medicine in the past week would look like a drug addict. I'm not sure though...

"DXM is not specifically tested for in drug tests, but there is speculation that it could trigger the pcp test which is standard."

Speculation, but I haven't found anything to suggest that it definately does. Just list that you've taken cough syrup in the past week for a cold, DXM isn't illegal:

http://www.erowid.org/chemicals/dxm/dxm_testing.shtml

thanks. I guess it will kinda be funny though when i tell them i took cough med. with dxm in it for a cold when they find enough of it in me too sedate a wilderbeast. lol.

actually when i took 10 nyquill with dxm in it i went to the hospital cuz i took other pills with the nyquill and od'd, and my drug test came up possitive with amphetamines, pcp (which i never took at any time) and thc...so the dxm had to of made pcp show up.

I got tested a while back and it showed postive for pcp. and i never took nething but dxm to get fucked up so it caused it.