QuantiFERON® — TB Gold Test
A modern blood test to detect tuberculosis (TB) infection
The QuantiFERON‑TB Gold test is a blood‑based diagnostic lab test that identifies TB infection by measuring your immune system's response to TB‑specific proteins. It's an Interferon‑Gamma Release Assay (IGRA), offering a more accurate and convenient alternative to the traditional skin test.
Every LabFinder test includes doctor oversight, ensuring your results come with the context and care you deserve.
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Testing helps identify infection early so you can receive treatment and reduce spread.
People with TB exposure risk, healthcare workers, travelers to high‑prevalence areas, and those with symptoms.
- Blood Collection: A healthcare provider will draw a small sample from your arm.
- Laboratory Analysis: The sample is exposed to TB‑specific antigens to stimulate an immune response.
- Result Interpretation: The lab measures the release of interferon‑gamma to determine if you're infected.
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Frequently Asked Questions
QuantiFERON® — TB Gold Test
Is fasting required?
No, you can eat and drink normally before the test.
Are there any risks?
The test is safe; some may experience minor discomfort at the blood draw site.
How soon will I get results?
Results are typically available within 1–3 days.