Loading dose b12 + thyroid test

[christinamaria11]

I am planning to do a full thyroid test

I am aware that no b12 should be taken at least 3 days prior to testing, Is it ok do do test even though I have recently finished my loading dose of B12 given by doctor

Thanking you for advice

[SlowDragon Administrator]

It's Vitamin B complex that should be stopped 3-5 days before any blood tests, due to biotin

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

endocrinenews.endocrine.org...

[christinamaria11 in reply to SlowDragon]

Thank you slow dragon for reply

Yes stopped both b complex + b12 for 3days so I could do thyroid blood test

Finished loading dose of b12 5days ago-so can I go ahead with blood test without messing up results? Thanks

[greygoose]

If you want a true reading for B12, you need to stop it for 5 months.

[christinamaria11 in reply to greygoose]

Thank you grey goose in your reply

I was just checking that having only recently finished loading dose of b12 -if it was ok to do thyroid blood test

[greygoose in reply to christinamaria11]

Oh, it won't affect your thyroid tests. That's B8, as SlowDragon has said.