Biotin in Vit b 12 complex effects thyroid bloo... - Thyroid UK

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Biotin in Vit b 12 complex effects thyroid blood tests?

Debzeewestmids profile image
5 Replies

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...

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Debzeewestmids profile image
Debzeewestmids
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5 Replies
Hypo88 profile image
Hypo88

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

Anthea55 profile image
Anthea55

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.

ITYFIALMCTT profile image
ITYFIALMCTT

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

SlowDragon profile image
SlowDragonAdministrator

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...

Debzeewestmids profile image
Debzeewestmids

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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