When to stop Bcomplex supplement before blood tests?

[LynLyn]

Hello everyone. Please advise when I should stop taking bcomplex supplements before my next thyroid blood tests.

I also take vit D and the co factors and a gentle iron supplement. Are these ok to continue?

Many thanks for your help with this. I don’t want to mess the tests up!

[SeasideSusie Remembering]

LynLyn

If the biotin is in a B Complex and the amount is around the 400mcg dose, then 3 days is probably enough, you could be cautious and leave it off for 7 days.

If the biotin is in a hair and nail supplement and the dose is in mg (milligrams) rather than mcg/ug (micrograms) then this is a much higher dose and you should leave off for 7 days.

If your test includes ferritin/iron as well as thyroid then you stop the iron a week before the test and any iron test should be done after a 12 hour fast (water allowed).

Vit D and cofactors you can continue up to and including the day before, on the day of the test take it and any other supplements after the test.

[LynLyn in reply to SeasideSusie]

Thank you so much for all of that. I’m just having thyroid bloods done this time. The vitamins are being done the next time! Will continue with the others and drop the bcomplex. Many thanks 😊