• Screening & Testing for LTBI

    There are two kinds of tests that are used to detect TB bacteria in the body: the TB skin test (TST) and TB blood tests. A positive TB skin test or TB blood test only tells that a person has been infected with TB bacteria. It does not tell whether the person has latent TB infection (LTBI) or has progressed to TB disease.


  • Testing & Diagnosing Active TB Disease

    If a person is found to be infected with TB bacteria, other tests are needed to rule-out/-in active TB disease. Other tests, such as a chest x-ray and a sample of sputum, are needed to see whether the person has TB disease.