First time on T3, what do you think? - Thyroid UK

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First time on T3, what do you think?

Heyhop•

7 months ago•2 Replies

Any thoughts regarding my latest bloods please?

Hyperthyroidism; This is my first time on T3.

I take 125 mcg T4 and 10mcg T3. (I’m 8 months post partum).

(24hrs between meds when doing bloods)

Free T3 4.7 pmol/L (in range) range (3.10-6.80pmol)L

THS 0.02 pmol/L (out of range) (range 0.27-4.20mIU/L)

Free T4 18 pmol/L (in range) (11-22pmol/L)

Thank you!

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Heyhop

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2 Replies

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DippyDame7 months ago

Important question....how do you feel?

Any symptoms?

Hyperthyroidism; This is my first time on T3.

Not sure what you mean...

10mcg is a relatively small dose.

No indication of hyperthyroidism in these results....FT3 would be well over range....in any case if one is hypothyroid it is almost impossible to become hyperthyroid.

Gap between last dose of T3 and test should be 12 hrs, not 24hrs, so your FT3 may be slightly lower after that 24hr gap.

Gap is 24 hrs for FT4 dose to test

TSH, once medicated, especially with T3, is not a relible marker so don't be concerned about that result

FT3 followed by FT4 are the most important results

T3 lowers both TSH and FT4

FT4 is 63.64% through ref range

FT3 is 43.24% ditto. (24hr dose/ testing gap has likely reduced this so possibly a bit higher!)

We aim to have both Frees roughly approaching 75% through the respective ref ranges.

FT3 may still be a tad low....but we are all different.

If you feel well....good

If not test again....make a list of symptoms

In either case - to double check - best to test again after 6 weeks following correct timing protocol

Have you optimised essential nutrients ( follows) to support thyroid function/ conversion?

Test - TSH, FT4, FT3, vit D, vit B12, folate, ferritin and thyroid antibodies TPO and Tg

Those new results will point the way forward.

SlowDragonAdministrator7 months ago

How do you feel

Recommended that all thyroid blood tests early morning, ideally just before 9am, only drink water between waking and test and last dose levothyroxine 24 hours before test

This gives highest TSH, lowest FT4 and most consistent results. (Patient to patient tip)

T3 ….day before test split T3 as 2 or 3 smaller doses spread through the day, with last dose approximately 8-12 hours before test

Low iron/ferritin extremely common after having a baby

For full Thyroid evaluation you need TSH, FT4 and FT3 tested

Also both TPO and TG thyroid antibodies tested at least once to see if your hypothyroidism is autoimmune

Very important to test vitamin D, folate, ferritin and B12 at least once year minimum

Suggest you retest including vitamin levels and test with last 5mcg dose T3 at 8-12 hours before test

Private tests are available as NHS currently rarely tests Ft3 or all relevant vitamins

Testing options and includes money off codes for private testing

thyroiduk.org/testing/

Medichecks Thyroid plus BOTH TPO and TG antibodies and vitamins

medichecks.com/products/adv...