Table 4.

Diagnostic validation of different tests using nested PCR as gold standard (all values are in percentage).

Diagnostic method	Sensitivity	Specificity	PPV	NPV
LYMPH GLAND TB
Anti-BCG	88	86	94	76
Anti-MPT64	93	98	99	85
ABDOMINAL TB
Anti-BCG	86	81	86	81
Anti-MPT64	89	95	96	87
TOTAL TB CASES
Anti-BCG	88	85	92	78
Anti-MPT64	92	97	98	85

PPV = positive predictive value, NPV = negative predictive value