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Labcorp
Broadest draw-site network nationwide.
Quest Diagnostics
Same-day appointments in most metros.
Thyroid Stimulating Immunoglobulin (TSI) is an autoantibody that stimulates the thyroid gland to produce excess thyroid hormones. It is primarily used to diagnose and monitor Graves’ disease, a common cause of hyperthyroidism.
Schedule a consultation with a Hormunity specialist. We’ll walk through every marker, interpret what it means for you, and map out the next steps for your care.
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