---
title: "Thyroglobulin Antibodies (TgAb) Test: What It Measures"
description: "It checks thyroid autoantibodies that can signal autoimmune thyroid disease and affect thyroglobulin tracking, with easy ordering and Quest labs via."
canonical: "https://www.vitalsvault.com/biomarkers/thyroglobulin-antibodies"
last-updated: 2026-08-22
---

# Thyroglobulin Antibodies (TgAb) Test: What It Measures

> It checks thyroid autoantibodies that can signal autoimmune thyroid disease and affect thyroglobulin tracking, with easy ordering and Quest labs via.

---

Canonical HTML: https://www.vitalsvault.com/biomarkers/thyroglobulin-antibodies
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