Table 13. Comparison of the sensitivity of the TST and the serology test based on ELISA using each antigen and their cumulative results in HIV-infected active TB patients stratified by CD4 cell counts/µL (lower or above 200/µL).

	Percentage (95% CI)
	n/N	<200 CD4 cell counts/µL	n/N	>200 CD4 cell counts/µL	P
		% (95% CI)		% (95% CI)
ELISA
PGL-Tb1	22/36	61.1 (43.5–76.9)	15/20	75.0 (50.9–91.3)	0.3824
ESAT-6/CFP10	22/36	61.1 (43.5–76.9)	14/20	70.0 (45.7–88.1)	0.5713
Both antigens	24/36	66.7 (49.0–81.4)	15/20	75.0 (50.9–91.3)	0.5613
TST	9/11	81.8 (48.2–97.7)	3/4	75.0 (19.4–99.4)	1.000

Footnotes: TB: tuberculosis; HIV: human immunodeficiency virus; n/N = number of positive tests/number of tested sera in each group; TST: tuberculin skin test (cut-off 5 mm); Cut-off value for PGL-Tb1: OD = 0.130; Cut-off value for ESAT-6/CFP10: OD = 0.100; CI: confidence interval.