---
title: "Vitamin D, 25-Oh, Total Test: What It Measures"
description: "It measures your vitamin D status to guide bone, muscle, and immune health decisions, with convenient ordering and Quest lab access via Vitals Vault."
canonical: "https://www.vitalsvault.com/biomarkers/vitamin-d-25-oh-total"
last-updated: 2026-08-22
---

# Vitamin D, 25-Oh, Total Test: What It Measures

> It measures your vitamin D status to guide bone, muscle, and immune health decisions, with convenient ordering and Quest lab access via Vitals Vault.

---

Canonical HTML: https://www.vitalsvault.com/biomarkers/vitamin-d-25-oh-total
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