Normal Reference Ranges:

• TSH (Thyroid-Stimulating Hormone): 0.4–4.0 mIU/L Medical News Today

• T4 (Thyroxine): 4.5–12.0 µg/dL Testing.com

Test Components:

• TSH: Stimulates the thyroid gland to produce T3 and T4; elevated levels may indicate hypothyroidism, while low levels suggest hyperthyroidism.

• T4: The main form of thyroid hormone circulating in the blood; measured as total or free T4.

This test is essential for evaluating thyroid health and diagnosing related disorders. Consult with a healthcare provider for interpretation and appropriate management.