Unless it is a special drug
test, you don't have to worry about DXM
, since it isn't tested for on standard drug tests. There is speculation that it can cause a false positive for PCP
, but I have never found any sources to support this. It could be detected using GC/MS though.
And I wouldn't trust that the DXM should be out of your system that fast. A DXM trip can easily last 8 hrs and my sardines have had quite a few fourth plateau trips that lasted over 24hrs. DXM is also known for having a long afterglow for many people. So if you really want to play it safe then 2-3 days is reasonable. 7 days wouldn't be totally unreasonable either.