Skip to main content
. Author manuscript; available in PMC: 2010 Apr 14.
Published in final edited form as: Clin Infect Dis. 2009 Feb 1;48(3):302–312. doi: 10.1086/595847

Figure 2. Sensitivity and Specificity of the TST by cut-off point, using ELISpot as a reference standard for LTBI.

Figure 2

The filled diamond line represents sensitivity, and the hollow circle line represents specificity. Sensitivities were calculated as the cumulative proportion of ELISpot positive contacts with reactions equal to or larger than the TST cut-off point, and specificity as the cumulative proportion of ELISpot negative contacts with indurations smaller than the cut-off point.