---
title: "Urine Calcium Oxalate Crystals Test: What It Measures"
description: "It shows whether calcium oxalate crystals are present in your urine, a clue to stone risk and hydration status—order through Vitals Vault/Quest."
canonical: "https://www.vitalsvault.com/lab-tests/urine-calcium-oxalate-crystals"
last-updated: 2026-08-22
---

# Urine Calcium Oxalate Crystals Test: What It Measures

> It shows whether calcium oxalate crystals are present in your urine, a clue to stone risk and hydration status—order through Vitals Vault/Quest.

---

Canonical HTML: https://www.vitalsvault.com/lab-tests/urine-calcium-oxalate-crystals
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