T3 Total

This comprehensive T3 test measures both the bound and free triiodothyronine in your blood, providing a highly accurate snapshot of your thyroid function. T3 is one of two crucial hormones your butterfly-shaped thyroid gland produces to regulate your body's metabolism, heart function, and energy levels. If you are experiencing symptoms like unexplained weight loss, anxiety, or irritability, or if you are already monitoring a diagnosed thyroid disorder, this test is often necessary. Abnormal T3 levels are a key indicator of hyperthyroidism, where your body is producing too much thyroid hormone. Understanding your total T3 level is a vital step in helping your doctor properly diagnose and manage your thyroid health.