TABLE 3.

Specimen sources and comparison of LCx M. tuberculosis Assay results after resolution of discrepancies with clinical diagnosis of TB

Specimen	No. of specimens with TB result				% Sensitivity	% Specificity	% PPV	% NPV
	Clinical diagnosis positive		Clinical diagnosis negative
	LCx positive	LCx negative	LCx positive	LCx negative
Urine	14	6	0	49	70.0	100	100	89.1
Feces	7	1	0	27	87.5	100	100	96.4
Organic fluids	26	13	0	136	66.6	100	100	91.2
Blood and bone marrow aspirates	28	5	0	101	84.8	100	100	95.2
Lymph nodes, biopsies, and others	30a	4	0	79	88.2	100	100	95.1

^aFour patients with anti-TB treatment and one patient with active cervical tuberculous lymphadenitis.