---
title: "Quantiferon TB Gold Plus 1 Tube Test: What It Measures"
description: "It checks for TB infection by measuring interferon‑gamma response in your blood, with easy ordering and clear results through Vitals Vault/Quest."
canonical: "https://www.vitalsvault.com/biomarkers/quantiferon-tb-gold-plus-1-tube"
last-updated: 2026-08-22
---

# Quantiferon TB Gold Plus 1 Tube Test: What It Measures

> It checks for TB infection by measuring interferon‑gamma response in your blood, with easy ordering and clear results through Vitals Vault/Quest.

---

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