Will Riboflavin (Vitamin B2) cause a false positive on a drug test?

I am currently on probation for two underage drinking violations. My P.O. drug tests me once a month and recently I was looking online at all the drugs/vitamins that cause false positives. Vitamin B2 (which I take) causes a false positive for THC. What happens if I get a false positive will my P.O. violate me? She hates me and I am worried that she would use this as an opportunity to send me to jail. As long as I tell her I take B2 before the test will I be ok? What are my rights as far as false positives?


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2 Comments

  1. DoubleM
    Posted April 7, 2010 at 5:41 am | Permalink

    Your source is wrong. Vit B2 doesn’t cause false positives. If you’re truly concerned about the meds that you’re taking causing deceptively positive UA results, then talk to your PO about your concerns, tell her what you found on the internet, and ask her what lab they use. From there, call the lab. Is B2 all that you’re taking? If so, have no fears.

  2. Lady G
    Posted April 7, 2010 at 5:41 am | Permalink

    I’d believe you, but how do you prove it’s a false postive?

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