T-spot.TB

^[1]^[2]

Indications

false positives among healthcare workers more frequent (5.0%) than tuberculin skin testing (1.8%)^[2]
test conversion among healthcare workers more frequent (8.3%) than with tuberculin skin testing (0.9%)^[2]

* no association between test conversion & exposure to tuberculosis^[2]

includes positive control

↑ Ferrara G et al, Use in routine clinical practice of two commercial blood tests for diagnosis of infection with Mycobacterium tuberculosis. Lancet 2006; 367:1328 PMID: https://www.ncbi.nlm.nih.gov/pubmed/16631911
↑ ^2.0 ^2.1 ^2.2 ^2.3 Dorman SE et al. Interferon-gamma release assays and tuberculin skin testing for diagnosis of latent tuberculosis infection in healthcare workers in the United States. Am J Respir Crit Care Med 2014 Jan 1; 189:77 PMID: https://www.ncbi.nlm.nih.gov/pubmed/24299555