[Helicobacter pylori--comparison of selected diagnostic methods].

Among 108 persons sick from chronic gastritis, 61 with ulcus ventriculi and 91 with ulcus doudeni, diagnostic of Helicobacter pylori with simultaneous utilization of the following methods: direct preparation of homogenous tissue (gastrobiopsy), histological preparation (coloring by Giemza method), culture and serologic test (ELISA and IFP) was carried out. It was proved that among sick persons under examination depending on the diagnostic methods used, frequency of the infection was as follows 20%--direct preparation, 63.8%--histological preparation, 68.1%--culture, 81.5%--serologic test. Differences in prevalence of H. pylori in respective sickness depending on diagnostic methods were noted. It was also determined on the ground of discrimination analysis that in order to obtain the best diagnostic value the most advisable is to couple serologic test and histological examination.