TSH = thyroid stimulating hormone; TSI = thyroid stimulating immunoglobulins; TT3 = total triiodothyronine; TT4 = total thyroxine. FT4I and FT3I are a calculation of the actual free thyroxine and ...

Diagnosis typically involves blood tests to check thyroid hormone levels and the presence of thyroid-stimulating immunoglobulin (TSI) antibodies. Imaging studies like thyroid scans may also be ...

Normal serum level in nonpregnant adult is 1.5-3.4mg/dL. TSI - Thyroid stimulating immunoglobulins (TSIs) are antibodies that block the TSH receptors; they belong to the IgG class. High TSI in the ...