---
title: "21 Hydroxylase Antibody Test: What It Measures"
description: "It checks for antibodies linked to autoimmune adrenal disease and Addison’s risk, with convenient ordering and clear results through Vitals Vault."
canonical: "https://www.vitalsvault.com/biomarkers/21-hydroxylase-antibody"
last-updated: 2026-08-22
---

# 21 Hydroxylase Antibody Test: What It Measures

> It checks for antibodies linked to autoimmune adrenal disease and Addison’s risk, with convenient ordering and clear results through Vitals Vault.

---

Canonical HTML: https://www.vitalsvault.com/biomarkers/21-hydroxylase-antibody
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