T4 blood test

[292426]

Doctor took tsh without T4 so I've just asked for a T4 test which he agreed to.So I will book for early morning and fasting.

My question is how many days should I stop taking my Bs prior? I know someone has advised before but I can't find the post.

Thank you.

[SlowDragon Administrator]

Stop vitamin B complex 5-7 days before

In week before blood test, when you stop vitamin B complex, you might want to consider taking a separate folate supplement (eg Jarrow methyl folate 400mcg)

[292426 in reply to SlowDragon]

So I haven't taken my Bs today, would Friday be too soon for t4 test?It's just that next week is very busy.

[SlowDragon Administrator in reply to 292426]

If it’s an NHS test that’s fine

If it’s a private test…..no do it on a Monday or Tuesday

[292426 in reply to SlowDragon]

👍

[radd in reply to 292426]

292426,

Ensure to ask for FT4 (not T4).