TABLE 1.

Results obtained with conventional serology

Group or subgroupa	% of positive results with the following test:
	IHA	BD	LA
1	100	95.4	73.91
2	88.89	46.67	33.33
2.1	91.17	41.18	35.29
2.2	81.81	63.63	27.27

^aGroup 1, patients with active disease; group 2, treated and cured patients; subgroup 2.1, patients treated 3 years or more before; subgroup 2.2, patients treated within the previous 3 years.