I have been tested for potential hypothyroidism with the following results:
TSH of 1.9 (normal range 0.3 - 4.7)
T4 of 15.6 (normal range 9.5 - 21.5)
T3 of 3.5 (normal range 3.5 - 6.5).
My endo has described this low T3 as "biochemically not meaning very much when accompanied by normal range FT4 and TSH". He suggested Selenium 200 mcg/d might help conversion from T4 to T3, but this does not seem to have made any noticeable difference.
For 4 to 6 weeks I took T3 (Liothyronine [3 - 16 mcg/d]) and found my total cholesterol dropped 2 points, evidence of blood in urine disappeared, pulse rate increased from mid-40's to mid-50's, lost 1 stone in weight and felt normal for the first time in years.
However, a few days ago I suddenly experienced terrible pain in my left leg which then collapsed and I suffered two broken wrists as a consequence of trying to save myself from falling. I am now very worried that this could happen again at any time and wondered if this could be anything to do with low T3?