Thyroid tests help evaluate how well your thyroid gland is working. The thyroid produces hormones that regulate metabolism, energy, and many bodily functions.
Key Thyroid Tests
TSH (Thyroid Stimulating Hormone): The most common thyroid test. High TSH suggests hypothyroidism; low TSH suggests hyperthyroidism.
Free T3: Measures the active form of thyroid hormone.
Free T4: Measures the main hormone produced by the thyroid.
Understanding Your Results
- Hypothyroidism (underactive): High TSH, low T3/T4
- Hyperthyroidism (overactive): Low TSH, high T3/T4