Non-invasive diagnosis of H pylori infection: Evaluation of serological tests with and without current infection marker CIM

Table 2 Comparison of serological tests with H pylori infection (n = 82)

Test	H pylori infection1
	Infected (n = 61)	Non-infected (n = 21)
	n (%)2	n (%)2
ELISA
Positive (n = 71)	59 (83.0)	12 (17.0)
Negative (n = 11)	2 (18.2)	9 (81.8)
ICT
Positive (n = 59)	55 (93.2)	4 (6.8)
Negative (n = 23)	6 (26.1)	17 (73.9)
ICT with CIM
Positive (n = 56)	54 (96.4)	2 (3.6)
Negative (n = 26)	7 (26.9)	19 (73.1)
Immunoblot
Positive (n = 64)	60 (93.8)	4 (6.2)
Negative (n = 18)	1 (5.6)	17 (94.4)
Immunoblot with CIM
Positive (n = 62)	60 (96.8)	2 (3.2)
Negative (n = 20)	1 (5.0)	19 (95.0)

¹Infected: Culture positive or culture negative but both RUT and histology positive; non-infected: All three tests negative;

²Percentages are over row total.