interferon gamma assay for tuberculosis

Any test for latent tuberculosis that relies on the amount of interferon gamma (IFNγ) released by T cells that have been previously exposed to mycobacterial antigens. One such test, the whole blood assay, is performed by withdrawing about 1 ml of whole blood from the vein of a patient. This blood is heparinized, to prevent clotting, and then mixed with specific mycobacterial antigens and control substances. After overnight incubation, samples of plasma from the blood are tested for INFγ levels. The test is considered positive if INFγ in a sample exposed to mycobacterial antigens is > 0.35 IU/ml. See also: assay

单词	interferon gamma assay for tuberculosis
释义	DictionarySeeassay interferon gamma assay for tuberculosis interferon gamma assay for tuberculosis Any test for latent tuberculosis that relies on the amount of interferon gamma (IFNγ) released by T cells that have been previously exposed to mycobacterial antigens. One such test, the whole blood assay, is performed by withdrawing about 1 ml of whole blood from the vein of a patient. This blood is heparinized, to prevent clotting, and then mixed with specific mycobacterial antigens and control substances. After overnight incubation, samples of plasma from the blood are tested for INFγ levels. The test is considered positive if INFγ in a sample exposed to mycobacterial antigens is > 0.35 IU/ml. See also: assay FinancialSeeAssay
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