Thyroid UK
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Biotin in Vit b 12 complex effects thyroid blood tests?

Biotin in Vit b 12 complex effects thyroid blood tests?

i came across this item on my news feed on FB today.I have been taking this and i have a blood test on Monday,so what do i do,cancel my test ?Or is it rubbish?

Can i have your thoughts on this please?

sorry it's not very clear in photo but here is the link.

nejm.org/doi/full/10.1056/N...

5 Replies
oldestnewest

Just lay off the B for a few days prior to blood test

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It's not rubbish. Put 'biotin' into the 'Search Thyroid UK' box at top right of the screen and you'll get several previous posts about this.

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Potential influence of biotin on some assays for thyroid results, B12 tests, and iron tests: healthunlocked.com/thyroidu...

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We probably only need to stop 24hours before, but advice is usually 2-4 days to be safe

I probably post this at least 5-10 times a day on here within replies

If you are taking vitamin B complex, or any supplements containing biotin, remember to stop these 3-5 days before any blood tests, as biotin can falsely affect test results

endo.confex.com/endo/2016en...

endocrinenews.endocrine.org...

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Thanks for all the responses,in the mean time i swapped my blood test from next Monday to Friday.i didn't even realise this.I only started taking them 2 weeks ago so they wouldn't affect any previous tests.

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