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Confidence votes 76. tb testing is to determine if you have been exposed to the tb virus. The shot would be the vaccination for it. 1 person found this useful.
T-SPOT.TB is a type of ELISPOT assay used for tuberculosis diagnosis, which belongs to the group of interferon-gamma release assays.The test is manufactured by Oxford Immunotec in the UK.It is available in most European countries, the United States as well as various other countries. metaanalysis of studies in children with active tuberculosis published in 2011 suggests that the sensitivity of the T-SPOT. TB is very similar to that of the tuberculin skin test (pooled sensitivity reported as 84% and 80%, respectively).