Hi, I have type 2 diabetes and don't make enough thyroid. I had labs done that came back in the normal range but my doctor still upped my medication. I take levothroxin 50mcg 1xday and she upped it to 100mcg 1xday. My question is why would I need more if test were in normal range? TSH was 4.205 Triiodothyronine,free serum 3.4 and Thyroxine free direct {t4} 1.25