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Table 3 Abilities of antigens to differentiate between TB disease and no TB disease after re-evaluation with the validation ELISA.

From: Potential of novel Mycobacterium tuberculosis infection phase-dependent antigens in the diagnosis of TB disease in a high burden setting

Antigen

TB cases

HHCs

P-value

AUC

Cut-off Value

Sensitivity

(%)

Specificity

(%)

Rv0867c

1.0 (0-43.8)

25.5 (0-257.5)

0.009

0.78

> 29.3

47 (7/15

93 (14/15)

Rv1009

0.6 (0-27.1)

9.8 (0-273.4)

0.012

0.77

< 1.4

53 (8/15)

87 (13/15)

Rv2389c

0.4 (0-29.5)

23.6 (0-297.4)

0.005

0.80

< 0.1

40 (6/15)

93 (14/15)

Rv0081

0.2 (0-400.0)

1.3 (0-97.1)

0.146

0.65

< 0.1

20 (3/15)

93 (14/15)

Rv1996

0.8 (0-33.7)

0 (0-195.4)

0.771

0.53

> 7.6

20 (3/15)

93 (14/15)

Rv2032

0.5 (0-21.0)

1.3 (0-400.0)

0.120

0.67

< 0.1

47 (7/15)

86 (12/14)

Rv2624c

0 (0-3.7)

0 (0-1.7)

0.295

0.61

< 0.1

27 (4/15)

93 (14/15)

Rv2625c

0.3 (0-31.4)

1.3 (0-400.0)

0.262

0.62

< 0.1

47 (7/15)

87 (13/15)

ESAT-6/CFP-10

305 (0-400.0)

308 (0-400.0)

0.712

0.53

> 441.2

33 (5/15)

96 (26/28)

  1. Median levels of IFN-γ (pg/ml) and ranges (in parentheses) detected in supernatants from TB cases (n = 15) and household contacts (n = 15) after evaluation with the Quantiferon TB Gold ELISA are shown. IFN-γ values were corrected for the unstimulated control levels and responses > 10 IU/ml (400 pg/ml) were given a value of 400 pg/ml. AUC = Area under the ROC curve