Purpose: Measures the total thyroxine levels, which include both bound and free forms. T4 is a key thyroid hormone involved in regulating metabolism. Abnormal levels may indicate thyroid dysfunction.

Understanding these thyroid-related tests can provide valuable insights into the function and health of the thyroid gland. Healthcare professionals use these tests collectively to diagnose and manage various thyroid disorders, including hypothyroidism, hyperthyroidism, and autoimmune thyroid diseases.

Purpose: Measures antibodies against thyroglobulin, a protein involved in thyroid hormone synthesis. Elevated TgAb levels may be associated with autoimmune thyroid diseases, including Graves’ disease.

Purpose: Measures antibodies against thyroid peroxidase, an enzyme involved in thyroid hormone production. Elevated TPO antibodies may indicate autoimmune thyroid disorders, such as Hashimoto’s thyroiditis.

Purpose: TSH is a hormone that stimulates the thyroid gland to produce thyroxine (T4) and triiodothyronine (T3). TSH levels are often used to evaluate thyroid function. High levels may suggest hypothyroidism, while low levels may indicate hyperthyroidism.

Purpose: Assesses the levels of free triiodothyronine, another thyroid hormone crucial for metabolism and energy regulation. Abnormal levels can indicate thyroid disorders.

Purpose: Measures the levels of free thyroxine, a thyroid hormone. FT4 is important for regulating metabolism and energy production. Abnormal levels may indicate thyroid dysfunction, such as hyperthyroidism or hypothyroidism.