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Yes, Riboflavin contains vitamin B2, as well as hempseed oil, both of which can create false positives, sometimes as high as 650 ng/mL (the cutoff level for most EMIT tests is 50 ng/mL). Furthermore, ibuprofen and Naproxen are known for causing the same false positives on these tests as well.
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Yes it can. I took my b vitamin and crushed it up and added water to it. Put it in a test and was wowed when it showed positive!!! Try it for yourself.
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