My father 76 years has hypo
thyroid presently taking thyronorm 25 mcg tablet since more than one year.
in his recent blood test report
T3 is 90.55 ng/dl ( range >50 yrs: 40----181 ng/dl)
T4 is 4.7 ( range is>60 yrs: 5 ---10.7 ug/dl)
TSH 20.9 ( range is 55 to 87 yrs:0.5--8.9 uIU/ml)
so dose need to be changed or should be kept same .
if changed than how much?