Medichecks Thyroid Ultravit test advises stopping any supplement containing B12 for 1 week prior to testing?

[jamjar67]

I am confused as all the advice on this forum says to stop any B12 supplementation for 5-6 months before testing....however the Medichecks test says stop for a week..., also Sheep’s milk is high in B12 so would that not skew results also..., if these foods/supplements are part of your diet and raise your levels does it really matter once they are getting your levels where they need to be?

I drink sheep’s milk, have been taking a B Vit containing some B12, and over the years have used yeast flakes in cooking, eggs - I have always been mindful of B12 being vegetarian but also eating fish the odd time... I don’t really want to stop B12 for 6months as would be scared of my levels dropping?

Am I overthinking this???

[SlowDragon Administrator]

No point stopping B12 for months

It is recommended to stop any supplements containing biotin, for 3-5 days before e.g. Vitamin B complex as biotin can falsely affect test results

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

endocrinenews.endocrine.org...

[jamjar67 in reply to SlowDragon]

Thankyou..., stopped my B vits end of last week so will do the test on Friday - Many Thanks

[SeasideSusie Remembering]

jamjar67

I am confused as all the advice on this forum says to stop any B12 supplementation for 5-6 months before testing

That is if you want a baseline result to see how much B12 you are holding on to.

If you test whilst supplementing B12, it would indicate if you are taking enough, too much or too little when you compare to a previous result.