Blood test results any advice : I'm on NDT and... - Thyroid UK

Thyroid UK

137,139 members160,821 posts

Blood test results any advice

Carriebaby profile image
4 Replies

I'm on NDT and just got bloods checked at my GP feeling great but a bit concerned

TSH. 0.1 range 0.3- 6

T3. 8.9. Range 3.5 - 6.5

T4. 16.7. Range. 9- 24

So my T3 is a little high but feel great taking 2 grain a day

Written by
Carriebaby profile image
Carriebaby
To view profiles and participate in discussions please or .
Read more about...
4 Replies
shaws profile image
shawsAdministrator

If you feel great you are on the correct dose and don't allow doctor to change.

The blood tests were introduced along with levothyroxine - T4 only. So if we take NDT, containing T4, T3, T2, T1 it cannot be the same as T4 only. The best way to judge if dose suits is 'how you feel'. So I wouldn't change anything at all.

T4 converts to T3, so being on NDT the T4 converts to T3 and it also has T3 which would probably show higher.

In the link below the doctor would not prescribe T4. He'd only prescibe NDT or T3 for thyroid resistant patients.

(I am not medically qualified by the way :) )

Clutter profile image
Clutter

Carriebaby,

If you took NDT before your blood draw the T3 will peak in your blood for up to 6-8 hours and that will be why FT3 is high.

If you left more than 8 hours between last dose and blood draw you are over medicated and should reduce dose by 1/2 to 3/4 of a grain.

Carriebaby profile image
Carriebaby in reply to Clutter

I took my medication around 10:30 am and blood was drawn at 5pm I'm feeling great no heart ❤️ palpations

Clutter profile image
Clutter in reply to Carriebaby

Carriebaby,

T3 is unlikely to be peaking 7.5 hours after last dose so I think you are over medicated and should consider reducing dose.

You may also like...

Any Advice on blood tests results and feeling rubbish

4 normal range 10.30-24.50 free t3 7 normal range 3.50-6.50 tsh <0.01 May 2018 Same ranges as......

Latest blood test results, any advice appreciated.

my latest blood test results, I would very much appreciate any comments. I do know that my TSH is...

Blood test results - any advice?

Hi, I just got my full bloods done at Blue Horizon after a longish episode of thyroid inflammation (

Got some results back from blood tests. Any advice?

Got my full bloods back from Doctor. Not including Free T3 tests or antibodies nor Vit D (I think)...

Blood test results, any advice.

reference range Serum free triiodothyronine level (XaERq) - Below range - 1.4 pmol/L (3.5 - 6.5)...