TABLE 2.

Rates of positivity using multiple serodiagnostic antibody assays in patients with different diagnostic results for active pulmonary TB

Patient group and diagnostic results	No. of cases	% Positivity with combined results from antibody assays toa:
		T and/or L		T and/or A		L and/or A		T and/or L and/or A		T and/or L and/or A and/or N
		n	%	n	%	n	%	n	%	n	%
Active pulmonary TB	117	97	82.9	98	83.8	102	87.2	107	91.5	109	93.2
Smear positive, culture positive	34	29	85.3	31	91.2	33	97.1	33	97.1	34	100
Smear negative	83	68	81.9	67	80.7	69	83.1	74	89.2	75	90.4
Culture positive	26	23	88.5	24	92.3	23	88.5	25	96.2	26	100
Culture negative	57	45	78.9	43	75.4	46	80.7	49	86.0	49	86.0
NAT positive	27	21	77.8	23	85.2	26	96.3	26	96.3
NAT negative	56	45	80.4	44	78.6	42	75.0	48	85.7
Chronic and smear positive	14	14	100	14	100	13	92.9	14	100

^aT, TBGL; L, LAM; A, A60; N, NAT.