title: Variable interpretation of the tuberculin skin test.
abstract: Some patients with tuberculosis infection have a negative tuberculin skin test (TST), particularly in case of immunodeficiency. Similarly, some BCG-vaccinated subjects without tuberculosis infection have a positive TST. Different clinical practice guidelines propose different criteria forTST interpretation, emphasising the uncertainties involved in the management of contacts based on an immunological test.
mesh_terms: D005188:False Negative Reactions; D006801:Humans; D017410:Practice Guidelines as Topic; D014374:Tuberculin Test