Clinical Evaluation of COBAS TaqMan PCR for the Detection of Mycobacterium tuberculosis and M. avium Complex

Table 1

M. tuberculosis PCR positivity rates according to fluorescent staining from Apr 2007 to Mar 2011.

Fluorescent staining	Sputum			BF			Total
	PCR+	No	%	PCR+	No	%	PCR+	No	%
—	17	31	54.8	0	1	0	17	32	53.1
1+	29	36	80.6	0	0		29	36	80.6
2+	71	72	98.6	1	2	50.0	72	74	97.3
3+	34	34	100	1	1		35	35	100
Total	151	173	87.3	2	4	50.0	153	177	86.4

G: Gaffky scale.
BF: bronchofiberscopy.