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Table 1 Demonstration of Ag 85 complex in sera from tuberculosis and non-tuberculosis patients by indirect ELISA method using the mAb against purified Ag 85 complex along with mean absorbance (with range)

From: Diagnosis of tuberculosis in an Indian population by an indirect ELISA protocol based on detection of Antigen 85 complex: a prospective cohort study

Patient group

Positivity for Ag 85 complex (cutoff of 0.18)

Negativity for Ag 85 complex

Absorbance (Mean ± 2SD)

Range

Tuberculosis group (n = 128)

105 (82.03%)

23 (17.96%)

0.42 ± 0.22

0.03 – 0.92

Confirmed (n = 24) (AFB & ulture positive)

23 (95.83%)

1 (4.17%)

0.64 ± 0.22

0.22 – 0.92

Clinically diagnosed (n = 104) (AFB & ulture negative)

82 (78.84%)

22 (21.16%)

0.37 ± 0.19

0.03 – 0.92

Non-tuberculosis group (69)

10(14. 49%)

59 (85. 51%)

0.16 ± 0.08

0.01 – 0.36

Disease Control(n = 49)

10 (20.40%)

39 (79.59%)

0.17 ± 0.09

0.01 – 0.36

Healthy Control(n = 20)

0 (0%)

20 (100%)

0.13 ± 0.05

0.02 – 0.21

  1. The data are expressed as mean ± SD.