T3 is an active thyroid hormone that your body creates by converting thyroxine (T4) into triiodothyronine. The 3 and 4 in the names represent the number of iodine atoms it has.

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 ...

TSH (Thyroid Stimulating Hormone): ... T4 is turned into another, more potent hormone called triiodothyronine (T3). “Thyroid hormone” refers to both T3 and T4.

The thyroid gland uses TPO along with iodine to generate the thyroid hormones triiodothyronine (T3) and thyroxine (T4). Together, these hormones regulate body temperature, heart rate, and metabolism.

Your thyroid produces thyroxine (T4), a generally inactive hormone, and triiodothyronine (T3), a hormone that is highly active. About 80 ...

The thyroid makes a protein called thyroglobulin that helps make thyroid hormones thyroxine (T4) and triiodothyronine (T3). Your Thyroid and Immune System Antibodies ...

The thyroid gland makes the hormones thyroxine (T4) and triiodothyronine (T3), which affect your metabolism (how your body uses energy) and almost every other organ in your body, ...

T4 is converted to T3 (also called triiodothyronine, the active form of the hormone) in various tissues outside the thyroid. T3 only stays in the body for a short while before it is destroyed, ...

Some people with the condition known as chronic fatigue syndrome (CFS) have low circulating levels of the thyroid hormone triiodothyronine (T3) and normal levels of thyroid-stimulating hormone ...