Triiodothyronine (T3) Test: What It Is, Function Levels Triiodothyronine, also known as T3, is one of the two main hormones your thyroid gland releases into your bloodstream Your thyroid also produces thyroxine, also known as T4 and tetraiodothyronine T4 and T3 work together and are commonly referred to as “thyroid hormone ”
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T3 levels: What is normal and what the test results mean Normal T3 levels indicate that someone’s thyroid is producing an adequate amount of T3 hormone High levels can indicate hyperthyroidism, and low levels can be a sign of hypothyroidism
What Is Triiodothyronine? T3 Functions and Levels While your thyroid releases mostly thyroxine (T4), it’s T3 that does the heavy lifting: regulating how fast your body burns calories, how quickly your heart beats, and how warm you feel Only about 20% of T3 comes directly from the thyroid itself
Triiodothyronine - Wikipedia Triiodothyronine, also known as T3, is a thyroid hormone It affects almost every physiological process in the body, including growth and development, metabolism, body temperature, and heart rate
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