TSH test

A TSH test measures the level of thyroid-stimulating hormone (TSH) in your blood, which is produced by the pituitary gland to regulate your thyroid. The test helps determine if your thyroid is underactive (hypothyroidism) or overactive (hyperthyroidism). Elevated TSH levels often indicate an underactive thyroid, while low levels suggest an overactive thyroid. It’s commonly used to diagnose thyroid disorders, monitor treatment effectiveness, or check thyroid function if symptoms like fatigue, weight changes, or mood shifts occur. The test provides valuable information about your thyroid health to guide appropriate treatment.