---
title: "Selenium RBC Test: What It Measures & What Results Mean"
description: "It measures longer-term selenium status in red blood cells to assess deficiency or excess, with convenient ordering and Quest-based lab access via Vitals."
canonical: "https://www.vitalsvault.com/biomarkers/selenium-rbc"
last-updated: 2026-08-22
---

# Selenium RBC Test: What It Measures & What Results Mean

> It measures longer-term selenium status in red blood cells to assess deficiency or excess, with convenient ordering and Quest-based lab access via Vitals.

---

Canonical HTML: https://www.vitalsvault.com/biomarkers/selenium-rbc
- [llms.txt](https://www.vitalsvault.com/llms.txt)
- [sitemap.xml](https://www.vitalsvault.com/sitemap.xml)
- [Developer portal](https://www.vitalsvault.com/developers)