21 Mar 2011
Mucinex DM (dextromethorphan and guaifenesin).-
Dextromethorphan - Can cause false positive for Heroin, Opiates, Morphine.-
Take some sort of proof that you have been prescribed this medication, and let the them know before they do the test that you are on it.-
All the best and take care.-
21 Mar 2011
Like technotard said-request a more specific test. The best test is gas chromatography-mass spectrometry (GS/MS). It is also more expensive but it will be able to prove or disprove any false positives. Many of the cheaper test dont distinquish certain metabolites (drug by products detected in the urine after a drug breaks down in the body). GS/MS will distinquish the differences so if they do GS/MS you wont get a false positive for other drugs or eating a poppy seed muffin or bagel and all the other false positives you hear of. It is a much more expensive test but if you do get a false positive and it can mean not getting job or not getting further pain control from pain management and especially in legal matters insist on the GS/MS test because it is the most accurate.
25 Feb 2012
Yes, it'll show up on a drug test. Found out the hard way. Took Mucinex on Thurs. Fri. and Sat. for bad sinus infection and tested on Wed at VA hospital. Tested postive for meth. Have never touch any drugs and have no plans to. Had a 3rd party test 4 hrs later that I paid for myself and test were negative. Go figure.
Search for questions
Still looking for answers? Try searching for what you seek or ask your own question.
I had a urine test that came back positive for butalbital; but I have never heard nor taken the drug in my life. What may cause this to read positive ...
1 answer • 31 Aug 2009
1 answer • 18 Oct 2009
Drug Test - My drug urine test was positive for opiates and antidepressants as well as oxycodone an?
... oxycontin. I take oxycodone and oxycontin and must test for workmans comp to show I am indeed taking what they buy for me. I have also had ...
3 answers • 5 May 2011
My 10 panel integrated urine drug test was given to me Monday at noon. I took 0.5mg of xanax that same morning at 9 am and the night before at 10:30 ...
2 answers • 21 Feb 2012
My daughter showed positive results for marijuana on a urine drug test. The only meds that she took prior to the test was naproxen.
2 answers • 11 Feb 2013