Description
Free Thyroid Hormones refer to the active form of thyroid hormones in the bloodstream that are not bound to proteins, allowing them to interact with cells and tissues in the body. The two primary thyroid hormones that are measured in thyroid function tests are T3 (Triiodothyronine) and T4 (Thyroxine). These hormones are produced by the thyroid gland, a butterfly-shaped gland located at the base of the neck, and play a critical role in regulating metabolism, energy production, and overall body function.