---
title: TSI Thyroid Stimulating Immunoglobulin Test
description: "A TSI test checks thyroid-stimulating antibodies linked to Graves’ disease, with convenient ordering and Quest-based lab collection through Vitals Vault."
canonical: "https://www.vitalsvault.com/biomarkers/tsi-thyroid-stimulating-immunoglobulin"
last-updated: 2026-08-22
---

# TSI Thyroid Stimulating Immunoglobulin Test

> A TSI test checks thyroid-stimulating antibodies linked to Graves’ disease, with convenient ordering and Quest-based lab collection through Vitals Vault.

---

Canonical HTML: https://www.vitalsvault.com/biomarkers/tsi-thyroid-stimulating-immunoglobulin
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