What condition does the TSH test typically evaluate?

The TSH test, or Thyroid Stimulating Hormone test, is primarily used to evaluate thyroid function. It measures the level of TSH in the bloodstream, which is produced by the pituitary gland to regulate the production of thyroid hormones by the thyroid gland. An elevated TSH level often indicates hypothyroidism, where the thyroid is underactive and not producing enough hormones. Conversely, a low TSH level can indicate hyperthyroidism, where the thyroid is overactive.

Since the test specifically assesses how well the thyroid gland is functioning and helps in diagnosing conditions related to thyroid hormone imbalances, it is directly related to thyroid disorders. This underscores the importance of TSH testing in clinical practice to identify and manage various thyroid-related health issues effectively.