Your doctor should look at actual thyroid hormone levels—Free T4 and Free T3. T4, the
storage form of thyroid hormone, is converted into T3, the
active form. Sometimes the body
has trouble changing T4 into T3, so it’s important to know what both levels are. Chronic stress and too much estrogen can interfere with this conversion, resulting in a low T3 level.
Elevated thyroid antibody levels suggest autoimmune thryoiditis, or Hashimoto’s disease.