11 Apr 2011
If they test for alcohol it could show up as well depending on the time you took the medicine and the time you took the drug screen. Nyquil has a high amount of alcohol in it. It also can contain pseudoephedrine which can show positive as an amphetamine. If you do get a false positive, ask for confirmation by GC-MS-gas chromatograph-mass spectrometry. This test is more expensive and you may have to pay for it yourself but it will differentiate the false positives. It is used to confirm or dispute false positives. It is extremely accurate.
Search for questions
Still looking for answers? Try searching for what you seek or ask your own question.
Codeine/Promethazine - if someone took one teaspoon of a cough syrup with codine, would they fail a?
... drug test and for how long?
3 answers • 27 Feb 2010
1 answer • 10 Feb 2011
I have a bad cough and a really painful earache, can I take pain pills and cough syrup
1 answer • 13 Dec 2013
1 answer • 6 Feb 2014
1 answer • 19 Nov 2014