Specific and Rapid Detection of Mycobacterium tuberculosis Complex in Clinical Samples by Polymerase Chain Reaction

Table 2

Detection of mycobacterial infection by polymerase chain reaction.

Category	Samples (n)	PCR results					No PCR- amplification		dnaJ
		Positive; n (%)	Sensitivity; (%)	Specificity; (%)	PPV (%)	NPV (%)	For (n [%])
							IS6110	hsp 65
Group I	26	22 (84.62)*	84.6	80	91.67	66.67	4 (15.38)
Group II	15	11 (73.33)*	73.33	80	84.62	66.67	2 (13.33)	2 (13.33)
Group III	9	7 (77.78)^#	77.78	80	77.78	80			2 (22.22)
Group IV	10	0 (0)	—	—	—	—	10 (100)	10 (100)	10 (100)

* Indicates positive result for all three markers; ^#indicates positive result for only dnaJ; PPV: positive predictive value; NPV: negative predictive value.