Bloods help: Hi all Thyroid papilery cancer TT... - Thyroid UK

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Bloods help

dodge1979 profile image
7 Replies

Hi all

Thyroid papilery cancer

TT aug 18

Rai Oct 19

I have a resistance in converting T4 to T3

Endo started T3 on 11th May 19

125 T4 and 20 T3 per day. I take them at 7am every morning

FEELING GREAT!!!

Problem is can get my TSH under 1

Of course I wait 1 hour before any food and drink

And have bloods don’t at 9 am

So I don’t have any meds for 26 hours before blood draw

Last bloods

TSH 1.19

T4 15.2

T3 4.7

Is 26 hours too long?

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dodge1979 profile image
dodge1979
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7 Replies
greygoose profile image
greygoose

It's much too long for T3, yes.

For T3 you should leave a gap of 8 - 12 hours. For levo, 24 hours. The day before your test you should adapt the timing of taking your hormone - that's what we all do. :)

dodge1979 profile image
dodge1979 in reply to greygoose

I take my T3 at 7am

I don’t split my dose. So how can I take it 12 hours before blood draw

greygoose profile image
greygoose in reply to dodge1979

As I said, adapt the timing. Either take it all 12 hours before the blood draw or split it just for that day and take the second dose 12 hours before the blood draw. Everyone does that.

dodge1979 profile image
dodge1979 in reply to greygoose

I would need to move my meds to 9pm

How do I do that

Can I take them at 7am. Then 9pm to move to bedtime meds?

greygoose profile image
greygoose in reply to dodge1979

Only the T3. The levo it's ok to leave a 24 hour gap. You might need to take it a bit later, but you can still take it in the morning. And, if I were you, I'd split the T3 the day before the blood draw and take the second dose at 9 pm. It's not difficult, just for one day.

SeasideSusie profile image
SeasideSusieRemembering

We need to see the reference ranges for test results. Even though you feel great, if you need your TSH to be under 1 then we need to see where your levels lie within the range to see if there's room for an increase in dose. Repeat the tests with the correct timing then post new results with reference ranges.

SlowDragon profile image
SlowDragonAdministrator

Recommended on here that all thyroid blood tests should ideally be done as early as possible in morning and fasting. This gives highest TSH, lowest FT4 and most consistent results. (Patient to patient tip, best not mentioned to GP or phlebotomist)

Last Levothyroxine dose should be 24 hours prior to test, (taking delayed dose immediately after blood draw).

If/when also on T3, make sure to take last dose 8-12 hours prior to test, even if this means adjusting time or splitting of dose day before test

Your FT4 is only mid range, perhaps you could manage dose increase in Levothyroxine

But get retested with correct timings first

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