Service Description

The TSI test measures thyroid-stimulating immunoglobulins, antibodies that can cause overactivity of the thyroid gland. Elevated TSI levels are commonly associated with Graves’ disease. Why it’s done: To help diagnose Graves’ disease To assess the cause of hyperthyroidism To monitor autoimmune thyroid activity over time To evaluate the risk of thyroid-related complications in pregnancy To support treatment decisions for thyroid disorders Specimen Type: Blood Turnaround Time: Typically 2–5 business days Collection Available: In-office or mobile blood draw services