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  2. Mantoux test - Wikipedia

    en.wikipedia.org/wiki/Mantoux_test

    A false negative result may occur in a person who has been recently infected with TB, but whose immune system hasn't yet reacted to the bacteria. Upper respiratory virus infection; In case a second tuberculin test is necessary it should be carried out in the other arm to avoid hypersensitising the skin.

  3. False positives and false negatives - Wikipedia

    en.wikipedia.org/wiki/False_positives_and_false...

    The false positive rate is equal to the significance level. The specificity of the test is equal to 1 minus the false positive rate. In statistical hypothesis testing, this fraction is given the Greek letter α, and 1 − α is defined as the specificity of the test. Increasing the specificity of the test lowers the probability of type I errors ...

  4. Quantiferon - Wikipedia

    en.wikipedia.org/wiki/QuantiFERON

    The Quantiferon-TB Gold test (QFT-G) is a whole-blood test for use as an aid in diagnosing Mycobacterium tuberculosis infection, including latent tuberculosis infection (LTBI) and tuberculosis (TB) disease. [15] This test was approved by the U.S. Food and Drug Administration (FDA) in 2005. Blood samples are mixed with antigens (substances that ...

  5. Tuberculosis - Wikipedia

    en.wikipedia.org/wiki/Tuberculosis

    A Mantoux tuberculin skin test. The Mantoux tuberculin skin test is often used to screen people at high risk for TB. [100] Those who have been previously immunized with the Bacille Calmette-Guerin vaccine may have a false-positive test result. [107] The test may be falsely negative in those with sarcoidosis, Hodgkin's lymphoma, malnutrition ...

  6. Diagnosis of tuberculosis - Wikipedia

    en.wikipedia.org/wiki/Diagnosis_of_tuberculosis

    The medical history includes obtaining the symptoms of pulmonary TB: productive, prolonged cough of three or more weeks, chest pain, and hemoptysis.Systemic symptoms include low grade remittent fever, chills, night sweats, appetite loss, weight loss, easy fatiguability, and production of sputum that starts out mucoid but changes to purulent. [1]

  7. Blood test could identify millions of people spreading ... - AOL

    www.aol.com/blood-test-could-identify-millions...

    TB kills more than one million people each year, according to the World Health Organisation. Blood test could identify millions of people spreading tuberculosis unknowingly Skip to main content

  8. Tine test - Wikipedia

    en.wikipedia.org/wiki/Tine_test

    The tine test is a multiple-puncture tuberculin skin test used to aid in the medical diagnosis of tuberculosis (TB). The tine test is similar to the Heaf test, although the Mantoux test is usually used instead. There are various forms of the tine tests which usually fall into two categories: the old tine test (OT) and the purified protein ...

  9. What Really Causes a False Positive COVID-19 Test? Experts ...

    www.aol.com/false-positive-covid-19-test...

    In the most basic sense, there are four possible outcomes for a COVID-19 test, whether it’s molecular PCR or rapid antigen: true positive, true negative, false positive, and false negative ...

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