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Tuberculosis (TB) Blood Test Popular

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About Our Tuberculosis (TB) Blood Test

Note: Fasting is not required for this test.

Our QuantiFERON® TB Gold blood test is used to test for tuberculosis (TB), a disease that can spread from person-to-person through the air. Tuberculosis is caused mycobacterium tuberculosis, a bacteria that has infected humans for thousands of years, typically affects the lungs.


Infection results in either acute disease or Latent TB Infection (LTBI), a non-communicable asymptomatic condition. The main purpose of diagnosing the latent stage of TB is to consider medical treatment for preventing overt disease. 

Until recently, the tuberculin skin test was the only available method for diagnosing latent TB infections. Our blood test offers advantages over the skin test method, including eliminating the false-positive results that the skin tests had a higher likelihood of returning, as well as the false-positives may result in people previously vaccinated with the bacille Calmette-Guerin (BCG) vaccination for tuberculosis and most Non-Tuberculous Mycobacteria (NTM). Also, unlike the skin test, multiple visits are not required with the QuantiFERON® TB Gold blood test.

TB testing is common for healthcare workers, childcare workers and those traveling to countries with a higher prevalence of tuberculosis.

With this tuberculosis test, there are no side effects or adverse reactions due to patient hypersensitivity, and no "booster effect". The QuantiFERON® TB test has been shown to be accurate in HIV-positive individuals with moderately advanced disease, but in the severely immunocompromised the test may be impaired by T-cell anergy.

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