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Table 2 In vitro responses to M. tuberculosis antigens in the study group populations.

From: New tools for detecting latent tuberculosis infection: evaluation of RD1-specific long-term response

In vitro
response to:
  Controls
N (%)
TST+, suspected LTBI
N (%)
Cured TB
N (%)
   13 (100) 106 (100) 29 (100)
QFT-IT     
  Positive N.(%) 0 70 (66.03) 19 (63.3)
  IFN-γ (IU/ml) median (IQR)
Among all
0 (0-0.1) 2.3 (0-15.1) 1.1 (0.1-4.2)
  IFN-γ (IU/ml) median (IQR)
Among the positive responders
NA 8.1 (2.4-22.6) 3.8 (1.5-5.0)
RD1 proteins     
  Positive N.(%) 0 64 (60.3) 19 (65.5)
  IFN-γ (IU/ml) median (IQR)
Among all
0 (0-0.2) 1.4 (0.2-8.9) 1.6 (0.4-2.9)
  IFN-γ (IU/ml) median (IQR)
Among the positive responders
NA 7.6 (2.3-20.3) 2.6 (1.6-6.2)
  1. Footnotes: IQR: inter quartile range; LTBI: latent tuberculosis infection; N: number; QFT-IT: QuantiFERON-TB Gold In-tube; RD: region of difference, TB: tuberculosis.