A thyroid panel test is a blood test that measures the levels of thyroid hormones and thyroid-stimulating hormone (TSH) in the body.
- It typically includes the measurement of thyroid hormones T3 (triiodothyronine) and T4 (thyroxine), as well as TSH, which is produced by the pituitary gland and regulates thyroid hormone production.
- The test helps evaluate thyroid function and diagnose conditions such as hypothyroidism (underactive thyroid) or hyperthyroidism (overactive thyroid).