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Table 5 Performance of GeneXpert and LPA tests compared to Culture MGIT in detecting M. tuberculosis

From: Comparison of GeneXpert and line probe assay for detection of Mycobacterium tuberculosis and rifampicin-mono resistance at the National Tuberculosis Reference Laboratory, Kenya

Ā 

Sensitivity (%)

Specificity (%)

Predictive values (%)

Kappa

Positive

Negative

GeneXpert

78.5 (70.1ā€“85.5)

64.86 (57.5ā€“71.7

59.4 (54.1ā€“64.5)

82.2 (76.4ā€“86.8)

0.411 (PĀ <ā€‰0.01)

LPA

98.4 (94.2ā€“99.8)

66.0 (58.6ā€“72.7)

65.4 (60.7ā€“69.8)

98.4 (93.9ā€“99.6)

0.591 (pĀ <ā€‰0.01)