Abstract: Objective It was reported that H.pylori is one of the high risk factors in chronic gastritis, ulcer, and gastric cancer, The aim of this study is to provide a useful method for detecting H. pylori.Methods In 150 patients H.pylori was detected with ureasetesting, warthin-starry histology, ELISA technique, and ¹³ C-breathtest-instructions.Results The sensitivities of the four methods are: ureasetesting (84.6%), histology (95.6%), ¹³ C-breathtest-instructions (97.8%), ELISA technique(89.0%). The speciticities of the four methods are urease testing (77.2%), histology (78.9%), ¹³ C-breathtest-instructions (88.2%), ELISA technique(75.6%) respectively.Conclusion Histology are the method with best accuracy for the detection of H.pylori.

Key words: H.pylori, detected method, contrast