Table 3. Comparisons of IFN-γ responses to different antigens measured by commercial ELISA among patients with culture-confirmed tuberculosis.

Cytokine	ESAT-6	ESAT-6	ESAT-6	ESAT-6	CFP-10	CFP-10	CFP-10	TB7.7	TB7.7	ESAT-6+CFP-10
	vs.	vs.	vs.	vs.	vs.	vs.	vs.	vs.	vs.	vs.
	CFP-10	TB7.7	ESAT-6+CFP-10	ESAT-6+CFP-10+TB7.7	TB7.7	ESAT-6+CFP-10	ESAT-6+CFP-10+TB7.7	ESAT-6+CFP-10	ESAT-6+CFP-10+TB7.7	ESAT-6+CFP-10+TB7.7
IFN-γ	61	61	61	61	128	128	128	3	3	187
	vs.	vs.	vs.	vs.	vs.	vs.	vs.	vs.	vs.	vs.
	128	3	187	202	3	187	202	187	202	202
	(0.794)	(<0.001)	(0.007)	(0.006)	(<0.001)	(0.005)	(0.005)	(<0.001)	(<0.001)	(0.327)

Median IFN-γ responses (from Table 2) to early secreted antigenic target-6 (ESAT-6), culture filtrate protein 10 (CFP-10), TB7.7, and combinations of these antigens for patients with culture-confirmed tuberculosis (patients) are listed with p values in parenthesis calculated by Mann-Whitney U Rank Sum test. Significant differences (p<0.05) are indicated in bold type.