Utility of Real-Time Quantitative Polymerase Chain Reaction in Detecting Mycobacterium tuberculosis

Table 2

Results of MTB detection by the two methods.

Sample source	Number	RT-qPCR		Improved L-J medium culture
		Positive number	Positive rate (%)	Positive number	Positive rate (%)
Sputum	107	17	15.9	14	13.1
Alveolar lavage fluid	16	2	14.3	2	14.3
Urine	36	2	5.6	1	2.8
Ascites and hydrothorax	18	2	11.1	2	11.1
Cerebrospinal fluid	8	0	0.0	0	0.0
Pus	7	1	14.3	1	14.3
Total	192	24	12.5	20	10.4