---
title: "Aldosterone–Renin Ratio (ARR) LC–MS/MS Test"
description: "It measures aldosterone, renin activity, and their ratio to screen for primary aldosteronism; order through Vitals Vault with Quest lab access."
canonical: "https://www.vitalsvault.com/biomarkers/aldosterone-plasma-renin-activity-ratio-lc-ms-ms"
last-updated: 2026-08-22
---

# Aldosterone–Renin Ratio (ARR) LC–MS/MS Test

> It measures aldosterone, renin activity, and their ratio to screen for primary aldosteronism; order through Vitals Vault with Quest lab access.

---

Canonical HTML: https://www.vitalsvault.com/biomarkers/aldosterone-plasma-renin-activity-ratio-lc-ms-ms
- [llms.txt](https://www.vitalsvault.com/llms.txt)
- [sitemap.xml](https://www.vitalsvault.com/sitemap.xml)
- [Developer portal](https://www.vitalsvault.com/developers)