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What Causes False Positive Urine Test Result For Methamphetamine?
Question: I have cronic pain Iam perscibed methadone and oxycontin for pain. I had a urine test 13 march the doctor said it came back positive for methamphetamine I have never used drugs other than prescibed.I do take otc ranitidine for acid reflux 300mg 2 150mg I bought a home test kit myself and it came back positive also I was shocked my doctor refuses to see me WHAT DO I DO. I MUST CLEAR MY GOOD NAME! CAN NOT BELIEVE THIS!
Brief Answer:
False positive results are common from Urine screen
Detailed Answer:
Hi, thanks for writing through HCM.
I have read your query and understood your concerns.
False positive results are common after urine drug screen particularly with immunoassay method. Methamphetamine can be falsely positive in a person taking ranitidine.
Following are the links for the articles which shows the false positive results for various drugs: I hope this will be helpful to you.
http://www.medscape.com/viewarticle/726897
http://dig.pharm.uic.edu/faq/2011/Feb/faq1.aspx
These article has also shown that Mehtamphetamine can be falsely detected by immunoassay method of urine screen when a person is taking ranitidine.
You can undergo repeat testing by gas chromatography method, which is more specific so false positive results can not be there.
The commercially available kits also uses immunoassay method so it can be false positive.
Hope I have answered your query. If you have further query then I shall be happy to help.
Wish you good health.
False positive results are common from Urine screen
Detailed Answer:
Hi, thanks for writing through HCM.
I have read your query and understood your concerns.
False positive results are common after urine drug screen particularly with immunoassay method. Methamphetamine can be falsely positive in a person taking ranitidine.
Following are the links for the articles which shows the false positive results for various drugs: I hope this will be helpful to you.
http://www.medscape.com/viewarticle/726897
http://dig.pharm.uic.edu/faq/2011/Feb/faq1.aspx
These article has also shown that Mehtamphetamine can be falsely detected by immunoassay method of urine screen when a person is taking ranitidine.
You can undergo repeat testing by gas chromatography method, which is more specific so false positive results can not be there.
The commercially available kits also uses immunoassay method so it can be false positive.
Hope I have answered your query. If you have further query then I shall be happy to help.
Wish you good health.
Note: For further guidance on mental health, Click here.
Above answer was peer-reviewed by :
Dr. Vinay Bhardwaj
Answered by
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