There are several treatment regimens for the treatment of latent TB infection. These regimens use the drugs isoniazid, rifapentine, or rifampin. Short-course regimens include: Three months of once-weekly isoniazid plus rifapentine 3HP , four months of daily rifampin 4R , or three months of daily isoniazid plus rifampin 3HR. Short-course latent TB infection treatments are effective, are safe, and have higher completion rates than longer treatments.
If a short-course treatment regimen is not an option, 6H or 9H is an effective alternative latent TB infection treatment regimen. Skip directly to site content Skip directly to page options Skip directly to A-Z link. Tuberculosis TB. Section Navigation. Facebook Twitter LinkedIn Syndicate. Fact Sheets. Minus Related Pages.
Open All Close All. What is it? How is the TST Administered? How is the TST Read? What Are False-Positive Reactions? What Are False-Negative Reactions?
The reasons for these false-negative reactions may include, but are not limited to, the following: Anergy Recent TB infection within the past 8 to 10 weeks Very young age younger than 6 months Recent live-virus measles or smallpox vaccination Incorrect method of giving the TST Incorrect measuring or interpretation of TST reaction.
Includes guidance for administration, reading, and interpreting TSTs. Note: to remove the watermark on the document, click on the document's footer then click on the watermark text. The skin test reaction should be read between 48 and 72 hours after administration. The reaction should be measured in millimeters of induration palpable, raised, hardened area or swelling.
Do not measure erythema redness. Patients were asked to read their own tests as well at 48 to 72 hours. The amount of induration at 24 hours was highly predictive of eventual findings at 48 to 72 hours.
The patients' abilities to read their own tests were poor. Even a negative test is helpful because it can rule out TB and help your doctor find other causes for your symptoms.
A positive skin test will usually be followed by a chest X-ray. This can help determine the difference between active TB disease and latent TB infection. Your doctor will look for white spots that indicate areas where your immune system is responding to bacteria. There may be other changes in your lungs caused by TB disease. Your doctor may decide to use a CT scan instead of or as a follow-up to a chest X-ray because a CT scan provides images of much greater detail. If the images indicate TB is present, your doctor may also order tests on your sputum.
Sputum is the mucus produced when you cough. A lab test can identify the type of TB bacteria causing the infection. This helps doctors decide which medication to prescribe. Tuberculosis TB , a highly infectious disease, primarily affects the lungs. Learn more about risk factors, symptoms, prevention, and treatment. Tuberculosis TB is a serious infection. Pulmonary tuberculosis TB is a contagious, infectious disease that attacks your lungs. People with the germ have a 10 percent lifetime risk of….
Meningeal tuberculosis occurs when tuberculosis travels through the bloodstream to the membranes surrounding the brain and spinal cord, called the….
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