TABLE 1.

Performance of laboratory tests in lymph node samples from patients with culturally proven lymphadenitis due to mycobacteria

Sample no.	Patient no.	Age (yr)	Sexa	Results of tests in lymph node samplesb
				Microscopy (AFB)	Culture grown	Assay
						In-house PCR	COBAS AMPLICOR MTB
							Without NALC	With NALC
1	1c	40	M	++++	M. tuberculosis	+	Inhibition	+
2	2	43	F	+	M. tuberculosis	+	−	−
3	3	9	F	−	M. tuberculosis	+	Inhibition	−
4	4	20	M	−	M. tuberculosis	+	+	ND
5	5	27	F	−	M. tuberculosis	+	Inhibition	Inhibition
6	6	28	M	−	M. tuberculosis	+	+	−
7	7	38	F	−	M. tuberculosis	+	+	ND
8d	7	38	F	−	M. tuberculosis	+	+	ND
9	8	54	F	−	M. tuberculosis	+	−	−
10	9	61	M	−	M. tuberculosis	+	ND	−
11	10	69	F	−	M. tuberculosis	+	−	−
12	11	91	M	−	M. tuberculosis	+	−	−
13	12	22	M	−	Negative	−	−	−
14d	12	22	M	−	M. africanum	+	−	−
15	13	87	F	−	M. bovis	−	Inhibition	−
16	14	23	F	−	M. tuberculosis	ND	ND	ND
17d	14	23	F	−	Negative	+	+	ND
18	15	61	M	+++	M. genavense	−	−	ND

^aF, female; M, male.

^bND, not done.

^cHuman immunodeficiency virus-infected patient.

^dObtained from the same patient 10, 15, and 21 days after the first sample, respectively.