How much sudafed will cause a false positive drug test for meth?

Answer:
Even if sent to a lab, it shouldn't show up as meth at all. The tests are broken down and they will look for the poisons that are used in meth. I have talked to drug counselors regarding this very thing and was assured this fact. Good luck. I would stop using the Sudafed if you are worried about it.
First answer by Dooby39. Last edit by Dooby39. Contributor trust: 23 [recommend contributor recommended]. Question popularity: 1 [recommend question].