2024年4月29日 · Who can get the TB blood test. Anyone can get a TB blood test. TB blood tests are preferred for people who: Have received the TB vaccine, also called bacille Calmette-Guérin (BCG). Have a difficult time returning for a second appointment. TB blood tests are safe to use during pregnancy.

2024年6月17日 · Understanding TB blood test or TB skin test results. A positive test result for TB infection means you have TB germs in your body. Your health care provider will do other tests to determine if you have inactive TB or active TB disease. These tests may include a chest x-ray, and a test of the sputum (phlegm) you cough up.

2025年1月17日 · Understanding TB blood test or TB skin test results. A positive test result for TB infection means you have TB germs in your body. Your health care provider will do other tests to determine if you have inactive TB or active TB disease. These tests may include a chest x-ray, and a test of the sputum (phlegm) you cough up.

2024年12月10日 · A diagnosis of latent TB infection is made if a person has a positive TB blood test or TB skin test result, and a medical evaluation does not indicate TB disease. A complete medical evaluation for TB disease has five components: Medical history. Physical examination. Test for TB infection (TB blood test or TB skin test) Chest radiograph

2024年5月9日 · The TB blood test (interferon gamma release assay [IGRA]) mixes a patient’s blood samples with peptides that simulate antigens derived from TB bacteria and with controls. The TB antigens were chosen because they are found in M. tuberculosis complex, including M. bovis , but they are absent from BCG and from the majority of other mycobacteria.

2024年12月10日 · The test result would alter case management or TB control activities (such as contact investigations) The Xpert MTB/RIF assay is an NAA test that simultaneously detects and identifies M. tuberculosis complex detects genetic mutations that can predict resistance to rifampin (RIF), one of the most effective drugs used to treat TB. A sputum sample ...

2023年12月15日 · Tuberculosis (TB) screening programs for health care personnel are part of TB infection control plans. CDC recommends all U.S. health care personnel should be screened for TB upon hire. Annual TB testing is not recommended unless there is a known exposure or ongoing transmission.

2024年5月14日 · When given a TB skin test years after infection, these persons may have little or no reaction, giving a negative skin test result. However, the TB skin test may stimulate the immune system, causing a boosted reaction with a positive result after subsequent tests. The TB blood test does not boost subsequent test results.

2023年12月19日 · Baseline TB Blood Test for Health Care Personnel. If baseline testing is performed using a TB blood test (also known as Interferon Gamma Release Assay or IGRA): Administer TB blood test following proper protocol. Review result, using the individual TB risk assessment to help interpret test results. If the result is negative, consider not infected.

This test is an in vitro diagnostic aid that measures a component of cell-mediated immune reactivity to M. tuberculosis. The test is based on the quantification of interferon-gamma (IFN-) released from sensitized lymphocytes in whole blood incubated overnight with purified protein derivative (PPD) from M. tuberculosis and control antigens.