---
title: "Western Ragweed (W2) IgE Test: What It Measures"
description: "It measures IgE sensitization to western ragweed pollen to help explain allergy symptoms, with convenient ordering and Quest draw options via Vitals Vault."
canonical: "https://www.vitalsvault.com/biomarkers/western-ragweed-w2-ige"
last-updated: 2026-08-22
---

# Western Ragweed (W2) IgE Test: What It Measures

> It measures IgE sensitization to western ragweed pollen to help explain allergy symptoms, with convenient ordering and Quest draw options via Vitals Vault.

---

Canonical HTML: https://www.vitalsvault.com/biomarkers/western-ragweed-w2-ige
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