Dear Dr. Roach: If levothyroxine (the T4 hormone) has a long half-life (seven days), how does the pituitary gland provide fine control of the thyroid’s T4 hormone during a short time period (minutes, ...

Triiodothyronine, or T3, is an important thyroid hormone that helps maintain muscle control, brain function and development, heart and digestive functions. High or low T3 levels may indicate an ...

The study covered in this summary was published on researchsquare.com as a preprint and has not yet been peer reviewed. Up to 30% of patients with HF have some form of thyroid dysfunction that may ...

CHICAGO — Levothyroxine (LT4) monotherapy remains the standard treatment for hypothyroidism, although a subset of patients continue to have hypothyroidism despite normal thyroid-stimulating hormone ...