---
title: "Beta Lactoglobulin F77 IgE Test: What It Measures"
description: "It measures IgE antibodies to beta‑lactoglobulin, a whey milk protein, to assess allergy risk, with easy ordering and Quest-based labs via Vitals Vault."
canonical: "https://www.vitalsvault.com/biomarkers/beta-lactoglobulin-f77-ige"
last-updated: 2026-08-22
---

# Beta Lactoglobulin F77 IgE Test: What It Measures

> It measures IgE antibodies to beta‑lactoglobulin, a whey milk protein, to assess allergy risk, with easy ordering and Quest-based labs via Vitals Vault.

---

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