Detection of anti-Helicobacter pylori antibodies in serum and duodenal fluid in peptic gastroduodenal disease

Table 1 Frequency of patients positive or negative for serum anti-H pylori IgG, positive or negative for serum anti-H pylori IgA and negative or positive simultaneously for serum anti-H pylori IgG and IgA in comparison to the gold standard

	IgG ( + )	IgG ( - )	IgA ( + )	IgA ( - )	IgG and IgA ( + )f	IgG and IgA ( - )f
	n	n	n	n	n	n
Histology and urease ( + )	32b	18b	36d	14d	26f	4f
Histology and urease ( - )	7	36	14	29	9	26

n: Number of patients;

^bP < 0.0001,

^dP = 0.0002,

^fP < 0.0001 vs his-tology and urease ( - ) group.