---
title: "Vitamin Deficiency Blood Test: What to Know"
description: "Learn what a vitamin deficiency blood test measures, which nutrients are tested, how results are read, and what to do after testing."
canonical: "https://www.vitalsvault.com/blogs/vitamin-deficiency-blood-test"
last-updated: 2026-08-22
---

# Vitamin Deficiency Blood Test: What to Know

> Learn what a vitamin deficiency blood test measures, which nutrients are tested, how results are read, and what to do after testing.

---

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