TABLE 3.

Diagnostic performance of three assay kits with sera from four regions of Brazil^a

Source of sera	Performance (%) by assay type
	Abbott Chagas antibody EIA			Biolab-Mérieux BIOELISACRUZI kit			BIOZIMA Chagas kit
	Relative sensitivity	Relative specificity	Accuracy	Relative sensitivity	Relative specificity	Accuracy	Relative sensitivity	Relative specificity	Accuracy
Minas Gerais	100.0	97.5	99.2	99.4	98.8	99.2	100.0	98.8	99.6
Paraíba	98.5	96.0	96.8	97.7	100.0	99.3	100.0	93.4	95.5
Piauí	98.5	95.3	98.0	98.5	100.0	98.8	100.0	97.7	99.6
Amazon	100.0	100.0	100.0	100.0	100.0	100.0	100.0	93.3	93.6
Total for all sera	99.0	96.8	97.9	98.6	99.8	99.2	100.0	94.7	97.4

^aIndeterminate results have been omitted.