what happens when you test positive for tb?
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A positive TB test result means only that TB bacteria has been detected. It does not indicate whether the person has active TB or a latent infection. This requires additional testing. TB disease can be diagnosed by medical history, physical examination, chest X-ray, and other lab tests.
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The test is "positive" if a bump about the size of a pencil eraser or bigger appears on your arm. This bump means you probably have TB infection. Other tests can show if you have TB disease. An x-ray of your chest can tell if there is damage to your lungs from TB.
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TB skin tests may be falsely positive when mycobacteria other than TB are present and in people who have received a BCG vaccine, often used in countries with a higher incidence of TB.
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A positive result means that signs of the virus were found and that you may have the flu, especially if other cases of the flu have been reported in your area at the time you are tested. It's possible to get a false-positive result, meaning that you aren't really infected. You may need more tests to confirm this.
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There are 3 stages of TB: exposure, latent, and active disease. A TB skin test or a TB blood test can often diagnose the infection. But other testing is also often needed. Treatment exactly as recommended is needed to cure the disease and prevent its spread to other people.
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There is very little risk to having a TB skin test or blood test. For a TB skin test, you may feel a pinch when you get the injection. For a blood test, you may have slight pain or bruising at the spot where the needle was put in, but most symptoms go away quickly.
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How can I get a TB blood test? Ask your health care provider. They will draw a small amount of blood and send it to a laboratory. Your health care provider should tell you if your test result is “negative” or “positive” in a few days.
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Tuberculosis chest X-rays are mandatory for: Patients who test positive after taking a TB test ( PPD or QuantiFERON) A new X-ray is mandatory for patients with documented history of testing positive every 5-10 years.
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An incubation period of two to 12 weeks is usually necessary after exposure to the TB bacteria in order for the PPD test to be positive. Anyone can have a TB test, and physicians can perform the test on infants, pregnant women, or HIV-infected people with no danger.
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Answer: No. Getting the Tdap vaccine at the same time as a TB skin test will not affect the results of the skin test.
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Many tuberculosis (TB) patients are never hospitalized. The greatest risk of transmission occurs prior to initiation of treatment. Seventy-five percent of all people who are acid fast bacillus (AFB) sputum smear positive will remain so for at least 2 weeks, with the majority remaining positive for 4 to 6 weeks.
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A positive test result shows you may have antibodies from an infection with the virus that causes COVID-19. However, there is a chance a positive result means that you have antibodies from an infection with a virus from the same family of viruses (called coronaviruses), such as the one that causes the common cold.
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Although tuberculosis is contagious, it's not easy to catch. You're much more likely to get tuberculosis from someone you live with or work with than from a stranger. Most people with active TB who've had appropriate drug treatment for at least two weeks are no longer contagious.
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TB skin testing is considered both valid and safe throughout pregnancy. TB blood tests also are safe to use during pregnancy, but have not been evaluated for diagnosing TB infection in pregnant women. Other tests are needed to show if a person has TB disease.
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Talk with your healthcare provider about your test result and the type of test you took to understand what your result means. You could still have a current infection. The test may be negative because it typically takes 1–3 weeks after infection for your body to make antibodies.
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If the area of skin where you received the PPD injection isn't swollen or is only slightly swollen 48 to 72 hours after the injection, the test results are negative. A negative result means that you most likely haven't been infected with the bacteria that cause TB.
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A Tuberculosis Test is not required if you are applying for a UK visitor visa. For all other UK Visa applications, for periods longer than six months, you will have to include the certificate stating that you are free from TB, together with your UK visa application.