Is it true that vitamin B2 can cause a false positive (I have seen a few sources that claim that it can)? Why is it recommended to take B2 in large amounts for dilution if there is a chance of it causing a false positive? Are false positives a concern if a follow up lab test on the sample (i understand that preliminary positive results are generally followed by lab tests) is included? Also, can the lab detect high amounts of B2 and conclude that the donor was trying to cheat?

Thanks
JamesCole770 Reviewed by JamesCole770 on . Vitamin B2 Is it true that vitamin B2 can cause a false positive (I have seen a few sources that claim that it can)? Why is it recommended to take B2 in large amounts for dilution if there is a chance of it causing a false positive? Are false positives a concern if a follow up lab test on the sample (i understand that preliminary positive results are generally followed by lab tests) is included? Also, can the lab detect high amounts of B2 and conclude that the donor was trying to cheat? Thanks Rating: 5