---
title: "Hemoglobin and Hematocrit Test: What It Measures"
description: "It measures your blood’s oxygen-carrying capacity and red cell concentration, with results you can order and review through Vitals Vault at Quest."
canonical: "https://www.vitalsvault.com/biomarkers/hemoglobin-and-hematocrit"
last-updated: 2026-08-22
---

# Hemoglobin and Hematocrit Test: What It Measures

> It measures your blood’s oxygen-carrying capacity and red cell concentration, with results you can order and review through Vitals Vault at Quest.

---

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