---
title: "Grapefruit F209 IgE Test: What It Measures"
description: "It measures IgE antibodies to grapefruit to assess allergy risk and guide next steps, with easy ordering and clear results through Vitals Vault and Quest."
canonical: "https://www.vitalsvault.com/biomarkers/grapefruit-f209-ige"
last-updated: 2026-08-22
---

# Grapefruit F209 IgE Test: What It Measures

> It measures IgE antibodies to grapefruit to assess allergy risk and guide next steps, with easy ordering and clear results through Vitals Vault and Quest.

---

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