Erythema induratum: case series illustrating the utility of the interferon-γ release assay in determining the association with tuberculosis.


BACKGROUND The interferon-γ release assay (IGRA) is a novel method for detecting previous sensitization to tuberculosis (TB). Despite having several advantages over the tuberculin skin test (TST), including higher specificity and no influence from past bacille Calmette-Guérin (BCG) exposure, there are a limited number of reports describing its application… (More)


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