Originally Posted by ldavisa

Prophet Saddam is right in the sense that it will show up to 36 hours; could be even up to 72 hours depending on your metabolism.

FYI: These types tests are very UNRELIABLE! I used to work at a temp agency in which we gave applicants on-site swab drug tests in which it collected their saliva. I know that some people posted a positive test when they had never touched drugs in their life (as they ended up disputing the results and had a drug test conducted by a professional agency which resulted in a negative result on a 10 panel test UA); and vice versa; people who smoked that told me they were not going to pass b/c they just smoked weed that morning ended up passing in panels.

Very unreliable form of testing; but also the cheapest way of testing for drugs. It is supposed to "mimick" what your blood would show, thus "mimicking" a blood test-only the swab method is very, very unreliable.

I would definetly appeal any negative result and get a UA done by an alt agency (you can always rig those piss tests a million diff ways); once you pass this test go back and provide proof of negative test. This to be done if you don't pass the swab test.