VIT D test: Hi all I have bought a private VIT D... - Thyroid UK

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VIT D test

Lindsayf profile image
9 Replies

Hi all

I have bought a private VIT D test for my parents. When is the best time for them to test please? First thing in the morning on an empty stomach or is this test a bit more flexible?

Thanks

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Lindsayf profile image
Lindsayf
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9 Replies
Lindsayf profile image
Lindsayf

also the VIT B they take has Biotin in it so should they stop taking before their VIT D test?

SeasideSusie profile image
SeasideSusieRemembering in reply toLindsayf

Is it blood in a microtainer or the dried blood spot test where you put 4 spots of blood on some blotting paper type stuff?

Lindsayf profile image
Lindsayf in reply toSeasideSusie

Yes that’s the one :)

SeasideSusie profile image
SeasideSusieRemembering in reply toLindsayf

Which one, I've given both versions and asked which :)

Lindsayf profile image
Lindsayf in reply toSeasideSusie

agh so sorry ;) it’s the 4 spots on a blotting paper

SeasideSusie profile image
SeasideSusieRemembering in reply toLindsayf

OK, so I asked the lab about this and they said the testing process is different from a serum blood sample and no biotin used in the process so no need to leave the B Complex off. However, if you want to be super cautious you could leave it off for a couple of days.

If they take Vit D they can continue with it up to and including the day before the test and the result will show what their dose is achieving .

First thing in the morning and water only before the test is for thyroid and iron tests.

Lindsayf profile image
Lindsayf in reply toSeasideSusie

okay that’s great… thank you so much. Trying to also time it with the postal strikes. That’s great to know that they can do the test anytime of the day. :)

JannSimpson profile image
JannSimpson

What is the best test for testing Vitamin D? Ive heard different things!

Lindsayf profile image
Lindsayf

Hi

I bought the test from vitamindtest.org.uk/

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