What Medications Can Cause A False Positive For Methamphetamine (Page 11)
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Can certain over the counter medications or prescription medications cause a false positive for Methamphetamine in a blood test?

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KKO Who is profiling what??? I think you misposted.

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Hey doc, two questions : Do you know what labs take walk in's without a Dr referral? Also, what does LC, MS and GC stand for?

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There definitely were no follow up tests. I was tested by my pain management Dr. He dismissed me from the practice with a letter, 2 weeks after the test. (saliva)

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James,
Your Sudafed probably caused the false positive on the amphetamine, and perhaps some other preparation caused the other false positive. BUT these tests were obviously NOT confimed, and only done with a cup, card, or EIA instrument. In order to say you are positive the tests MUST BE CONFIRMED by GC/MS or LC/MS/MS. You cannot be fired for a screening test. It is illegal.

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wow you are profiling, very sad

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I take tribenzor and cefuroxime and norvase and came up poss for

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Yes I had a severe sinus infection and taking sudafed and Advil along with 500 mg of antibiotics. Was randomly picked for a urine test and failed for THC and amphetamine and haven't done drugs in 10 yrs I don't understand no gonna be out a job cause of being sick

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Stacey,
You can fight this in court. The test the doctor did in his office is only a SCREEN and can cause many false positives. Without confirmation it is not valid to diagnose from.
If you lived in Nevada, I would say come to my lab and I will confirm it the right way, otherwise, see if you have Quest or someone who will do it without an Prescription from the doctor. I would seek legal counsel on this one.

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sounds like you need a new doctor Stacey.

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My doctor does not do confirmation tests! Is it possible to walk into a lab such as Quest and ask to do a hair test?

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My doctor does not do confirmation tests! And will not even recognize a test from an independent lab.

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Jerry, the blood only contains the drugs for a short time, they are metabolized pretty quickly into the urine, and with the hair follicle....hair grows approximately 1/2 inch a month. So, the sample taken depends on how long the hair was, was it from the head or another part of the body, because other body hair can keep it a lot longer. Hair may or may not have been confirmed negative, if the screening was negative. Thanks for your comments. I appreciate that someone is reading what I take the time to write.

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Stacey see my other two replies. If you have time to get your original sample reanalyzed by confirmatory testing it will exonerate you from the callous paranoid pain docs. Please realize that the DEA and the States Pharmacy Boards are creating this hardship on the real pain patients. Best of luck.

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Trix, Vicks Inhaler may be the culprit, if it contains l-amphetamine...which they used to, same as the Bezedrex inhalers. Ranitidine will do it, Jerry is right on that, plus, God only knows what the combinations of cold preps you are doing, and what mini thins contain....if there is any phenylpropanolamine, or ephedrine, you are looking at another possible FALSE POSITIVEs....also To Stacey, the nasal spray may be the culprit in your case. PLEASE EVERYONE GET A CONFIMATORY TEST DONE BY GC/MS or LC/MS That goes for urine, saliva, hair and sweat.
Also, quite putting so much chemicals into your body...your liver and kidneys will only hold up for so long. Best wishes to everyone!

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trixx I'm pretty sure cough syrups will cause false positives what kind of false positives that each one gives I'm not sure of but I know for a fact ranitidine aka zantac will give a false positive for meth so what you need to do is stop taking ranitidine and find out if the others can give false positives and idk your situation how long its been since you was tested etc but most likely you will need a hair test and make sure the test is GC/MS or LC/MS confirmed and if you haven't actually did meth or whatever they say you did then the test will come back fine it will distinguish the drug that gave you the false positive from the real deal and your test will come back negative hope this helps and good luck.

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I tested positive for meth and my doctor sent me certified letter saying that she will see me one . More time and after that I will be dismissed from that office. I only take what she prescribes to me. Although I've been sick with the flu and sinus infections and head colds that I can't seem to get rid of. I do take ranitidine for my stomach, hydrocodone for pain, klonopin for anxiety and nerves, gabapentin for nerve pain, singular for breathing, ventolin inhaler, feurocets for my headaches. Also she has pre s cribbed me a Zpack antibiotics and ranitidine for my flu like symptoms. The only thing I've taken that was not prescribed is a Vicks inhaler, cold cough and congestion pills, Nyquil caps, and I do take mini thins and 5 he energy shots and stickers. I've never touched meth or anything related to it. The only reason I take mini thins is to help lose weight the attackers before I go work to give me a little energy. Can someone please help me prove this to my doctor!!

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I also was going to a pain mngmt doctor. I had tried a spinal cord stimulator but that just made it worse. So he just recently put in a morphine pump. I haven't had pain relief like that in 20 years! Then bam! I get a letter saying he is dropping me from his practice because I tested positive for methamphetamine! I am a retired police officer, and I haven't even seen methamphetamine in 15 years or more! They just dropped me without a conference, or even a follow up test. This has absolutely crushed my world. I was just beginning to taper off of my oral pain meds, and needless to say, they refused to refill it or even to adjust my pump. Now I am scrambling to find another pain dr to take me. But why would another dr take me knowing I was dropped for testing positive? I could not figure out how this happened until I saw on this web site that otc nasal spray could cause a false positive. OMG. I have been using one for several years now. And this was also the first time they used a saliva test instead of urine. I pleaded my case but to no avail. Why on earth would I jeopardize my treatment just when I was finally getting some relief???

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Jerry,
It depends if they do confirmations. If so, yes it is done by either LC/MS/MS or GC/ MS. But the normal process for all urine, blood and hair testing is to do a screen on EIA or something similar, to be able to know what direction to go with the confirmation. Most places do not confirm all negatives, if the screens are negative, unless that person is on a certain medication. Then we have the scenario, of where the entire test is both screened and confirmed by GC/MS and/ or LC/ MS, and at that point it is finished...screened pos or neg. Hope this helps.

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yes John I understand how that works all drug test are subject to error without further testing but I think LC/MS GC/MS is pretty standard on the hair test because I remember when my test came back it said all of that on the page next to "negative" so the form of testing depends on how far you need to go back usually when somebody prefers a hair test it's because the drug has done had plenty of time to leave the urine so innocence has got to be proven using another method so more than likely you will see more false positives show up in urine than you will hair because urine test is used more often an hair test is more advanced because it's got to go to a lab to be tested. but there might be such a thing those confirmation test doesn't come standard but all I know is both urine test got it wrong and my blood and hair test come back 100% negative and both pages had the confirmations listed next to the result so I'm assuming the LC/MS GC/MS is part of the package

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Jerry, and everyone....Zantac, and many other meds can cause a false positive screen. But upon confirmation, it would prove out to not be Meth or Amphetamine.
That is why I continue to tell EVERYONE: Urine cups, oral swabs, hair...are all screened and are subject to error. That is why you MUST insist on LC/MS or GC/MS confirmation. It costs more money, but that is the ONLY way to stop false positives.

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I take 6 to 10 meds daily for pain and antidepressants, allergies, insulin, sudifed, ansanzidy, sleep meds, some others ...

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