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Bookmark or Share- T3 (Triiodothyronine) Test: What It Is, Function & LevelsOverview. What is a T3 (triiodothyronine) test? A T3 (triiodothyronine) test helps diagnose thyroid conditions, particularly hyperthyroidism (overactive thyroid). Your thyroid is a small, butterfly-shaped gland located at the front of your neck under your skin. It’s a part of your endocrine system.
- Total Triiodothyronine (T3) Test: Uses, Side Effects, ResultsThe total triiodothyronine (T3) test helps healthcare providers diagnose thyroid disorders, including hyperthyroidism, Graves' disease, and hypothyroidism. Learn more.
- T3 Blood Test (Free T3): What It Is, Function, Levels, and MoreA free T3 blood test, also known as a free triiodothyronine (T3) test, measures the amount of triiodothyronine in the blood. This hormone is made by the thyroid gland, which is responsible for many body functions. The blood test will diagnose certain thyroid conditions like hyperthyroidism.
- T3 levels: What is normal and what the test results meanNormal 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.
- Triiodothyronine - WikipediaTriiodothyronine, also known as T 3, is a thyroid hormone. It affects almost every physiological process in the body, including growth and development, metabolism, body temperature, and heart rate. Production of T 3 and its prohormone thyroxine (T 4) is activated by thyroid-stimulating hormone (TSH
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