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The blood tests QuantiFERON-TB Gold In-Tube and T-SPOT.TB use these antigens to detect people with tuberculosis. Lymphocytes from the patient's blood are incubated with the antigens. These tests are called interferon γ tests and are not equivalent. [19] If the patient has been exposed to tuberculosis before, T lymphocytes produce interferon γ ...
Blood-streaked sputum –an indicator of possible inflammation of the throat (larynx and/or trachea) or bronchi; lung cancer; other bleeding erosions, ulcers, or tumors of the lower airway. Pink sputum – it indicates sputum evenly mixed with blood from alveoli and/or small peripheral bronchi as is seen in potential pulmonary edema.
fever, chest pain, coughing, purulent sputum, mucocutaneous bleeding, jaundice. Imaging examination chest X-ray, CT scan and 3D reconstruction images or CT virtual bronchoscopy, bronchial angiography. Laboratory tests blood test: WBC; Sputum: cells and bacterial examinations, sputum culture; Bronchial fiber endoscopy [3]
A sputum culture is a test to detect and identify bacteria [1] or fungi that infect the lungs or breathing passages. Sputum is a thick fluid produced in the lungs and in the adjacent airways. Normally, fresh morning sample is preferred for the bacteriological examination of sputum. [ 2 ]
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.
Results are obtained from unprocessed sputum samples in 90 minutes, with minimal biohazard and very little technical training required to operate. [8] This test was developed as an on-demand near patient technology which could be performed even in a doctor's office if necessary.
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, and most notably, active tuberculosis. [13] Interferon gamma release assays, on a blood sample, are recommended in those who ...
Chest X-rays, blood tests, and culture of the sputum may help confirm the diagnosis. [8] The disease may be classified by where it was acquired, such as community- or hospital-acquired or healthcare-associated pneumonia. [18]