Also known as: '99 Thyroid Profile + TSH Profile (Compliance), Thyroid Profile B, Thyroid Profile I Free. Thyroid testing is primarily ordered to help diagnose an autoimmune thyroid disease and to separate it from other forms of thyroiditis. It may be ordered to investigate the cause of an enlarged thyroid gland (goiter) and/or performed as a follow-up when other thyroid test results (such as T3, T4, and/or TSH) show signs of thyroid dysfunction. Test Includes: Free thyroxine index; T3 uptake (THBR); thyroid-stimulating hormone (TSH); thyroxine (T4).
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