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31日 · Your health care provider may perform a two-step TB skin test if you are going to be screened for TB periodically (for example, if you are a health care worker). Some people with inactive TB, also called latent TB infection, have a negative reaction to the TB skin test when tested years after being infected. However, if they are tested again ...

2024年12月10日 · For more details on interpreting TB skin test results, please visit Clinical Testing Guidance for Tuberculosis: Tuberculin Skin Test. TB skin results should only be read by a trained health care professional. Consult with your state and local public health authorities to determine who is authorized to place and read TB skin tests in your state.

2025年1月31日 · BCG vaccination does not induce positive results when TB blood tests are used. TB blood tests are the preferred test for people who have received the BCG vaccine, including children. Boosted reactions and two-step testing. A boosted reaction can occur in previously infected, older adults whose sensitivity to tuberculin has decreased over time.

2025年1月31日 · Once you have a positive TB blood test or TB skin test result, you may still have a positive test result on future TB tests. This includes even after you finish taking all of your TB medicine for inactive TB or active TB disease. Ask your health care provider to give you a written record of your positive TB blood test result.

2025年1月31日 · Chest radiographs (x-rays) help differentiate between latent TB infection and pulmonary TB disease in people with positive results from a TB blood test or TB skin test. A posterior-anterior chest radiograph is used to detect chest abnormalities. Lesions may appear anywhere in the lungs and may differ in size, shape, density, and cavities.

2024年5月9日 · Negative TB blood test results for contacts of persons with infectious TB disease should be confirmed with a repeat test 8 to 10 weeks after their last exposure to TB. Patients with untreated, advanced HIV infection (or AIDS) or advanced immunosuppression, such as sepsis, can also have false-negative results.

2024年10月31日 · 2 Initial chest radiograph results consistent with TB. 3 Percentages calculated based on the number of persons who completed a chest radiograph. 4 The abnormal chest radiograph result showed evidence of one or more lung cavities. 5 Percentages calculated based on the total number of persons with abnormal chest radiograph results.

2024年4月10日 · This wallchart provides clear, detailed steps on how to administer and read the Mantoux TB skin test. The first two panels of the wall chart list the steps in administration and reading the skin test. The third panel describes how to interpret the skin test results.

a positive TB test result and a medical evaluation does not indicate TB disease. The decision about treatment for latent TB infection will be based on a person’s chances of developing TB disease by considering their risk factors. Diagnosis of TB Disease. TB disease is diagnosed by medical history, physical