I went to my GP in March as I had been feeling more and more tired over the last few years as well as other thyroid related symptoms, and have a family history of thyroid issues. GP seemed sceptical, but agreed to test thyroid function and antibodies:
Serum thyroid peroxidase antibody concentration 474 iu/ml (0.0 - 60.0)
Serum TSH level 13.03 mU/L (0.35 - 5.5)
Serum free T4 level 12.6 pmol/L (10.0 - 19.8)
Was told these results were borderline, but would treat with levo anyway. So was prescribed 50mcg of levo for two months, during which I felt much worse, and then retested:
Serum TSH level 13.59 mU/L (0.35 - 5.5)
Serum free T4 level 12.2 pmol/L (10.0 - 19.8)
Spoke to a different GP who recommended that I double my dose of levo to 100mcg, and retest again in 6 weeks, so am now taking that.
Does anyone have any insight into what these results mean? Is it normal to have such high TSH but free T4 in range? And for two months of levo to have had no effect?