What Causes False Positive Urine Test Result For Methamphetamine?

Posted on Tue, 17 Jan 2017

Medically reviewed by Ask A Doctor - 24x7 Medical Review Team

Tue, 17 Jan 2017 Answered on

Thu, 16 Feb 2017 Last reviewed on

Question : Hi, I take opiod pain med ( for about 20 yrs now) and also use chamomile and valerian tea for sleep. My urine has shown up pos for canabis which I have never used. Can the teas cause this?

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Answered by Dr. Ashok Kumar Choudhary (2 hours later)

Brief Answer:
It is more likely although no data available

Detailed Answer:
Hello,
Thanks for using Healthcaremagic.

I read your query and understand your concerns.

Although there is no literature available over the valerian tea but it is possible that it is likely cause for false positive result. This is because no test is 100 % accurate and further testing should be employed before accusing anybody of drug intake.

Having said this it is possible that use of opioid may have caused the presence of cannabis despite evidence that no such substance taken till date.

I hope this assists you.
If you have more questions feel free to write back to me.
Thanks again

Above answer was peer-reviewed by : Dr. Nagamani Ng