Volume 135, Issue 4, Pages 1010-1018 (April 2009) Comparative Performance of Tuberculin Skin Test, QuantiFERON-TB-Gold In Tube Assay, and T-Spot.TB Test in Contact Investigations for Tuberculosis Roland Diel, MD, MPH, Robert Loddenkemper, MD, FCCP, Karen Meywald-Walter, MD, Rene Gottschalk, MD, Albert Nienhaus, MD, MPH CHEST Volume 135, Issue 4, Pages 1010-1018 (April 2009) DOI: 10.1378/chest.08-2048 Copyright © 2009 The American College of Chest Physicians Terms and Conditions
Figure 1 Comparison of QFT and T-Spot.TB results for all 812 contacts. The gray circle represents 358 subjects with QFT responses < 0.1 mL and T-Spot results of 0 spots. The gray square represents 52 subjects with QFT responses ≥ 10 IU/mL and T-Spot responses of ≥ 30 spots. CHEST 2009 135, 1010-1018DOI: (10.1378/chest.08-2048) Copyright © 2009 The American College of Chest Physicians Terms and Conditions
Figure 2 IGRA-positive rates stratified by TST induration. CHEST 2009 135, 1010-1018DOI: (10.1378/chest.08-2048) Copyright © 2009 The American College of Chest Physicians Terms and Conditions