I am 39 and trying to conceive. I have an underactive thyroid and following a TSH of 2.75 (T4 of 17) a couple of months ago, my dose was increased from 75 mcg to 100 mcg.
My new test is showing TSH 0.19 (range of 0.4 to 5.50miu/L).
T3 is 3.7 (range of 3.10 to 6.80 pmoL)
T4 of 19.4 (range of 12.00 to 22.00 pmoL)
So now the GP is worried TSH is too low and has ordered another test in a month in case it drops further.
Strangely I am still showing some hypo symptoms including tiredness, coldness and dry skin near my eyes.
POST EDITED TO INCLUDE OTHER BLOOD TEST RESULTS:
As for the others, two months ago when I did last my result I was showing the following levels (but after advice here I've upped my dose further in the past two to get Vit D and ferritin optimal). Not had blood test since.
Ferritin 44 ug (range 13 to 150)
B12 1382 ng (range 197 to 771)
Vit D 69.6 nmo (range 50.0 to 120.0) Note I am Asian with mid brown skin.
My cholesterol is 6 (I have a lipid appointment scheduled but suspect this is linked to the thyroid issues)!