A T3 test is one of the most critical tests to measure or evaluate how your thyroid is functioning. This test measures the level of T3 Hormone in the blood. The Thyroid Gland produced T4 (Thyroxine), some of which gets converted to T3 by conversion.
T3 helps control many body functions including growth, body temperature, and heart rate. Hence it is important to assess the amount in the blood
T3 exists in two forms. The T3 total test measures both the free and attached forms in the blood
• The T3 is attached to a protein and aids in taking the hormone to different parts of the body
• The other form, which is lesser is free and not attached.
The T3 test is particularly useful in diagnosing hyperthyroidism, a condition in which the thyroid overproduces hormones, causing symptoms such as a fast heart rate, weight loss, trembling and sweating.
|Related Tests||TSH, Total T4, Free T3, Free T4|