RT Journal Article SR Electronic T1 Detection of Helicobacter pylori carriers by discriminant analysis of urea and pH levels in gastric juices. JF Journal of Clinical Pathology JO J Clin Pathol FD BMJ Publishing Group Ltd and Association of Clinical Pathologists SP 697 OP 698 DO 10.1136/jcp.44.8.697 VO 44 IS 8 A1 Ameglio, F A1 Abbolito, M R A1 Giannarelli, D A1 Citarda, F A1 Grassi, A A1 Gandolfo, G M A1 Casale, V YR 1991 UL http://jcp.bmj.com/content/44/8/697.abstract AB An alternative approach to the problems inherent in current methods for detecting Helicobacter pylori carriers--that of being generally time-consuming, expensive, and not sufficiently sensitive--was devised by using the urea concentration and pH levels of gastric juices. A linear discriminant analysis of these variables, measured in 54 patients submitted to digestive endoscopy for gastritis, provided a mathematical formula for assigning the subjects (previously classified by other standard methods) to groups of either positive or negative H pylori carriers. The results obtained showed a correct classification in 52 out of 54 cases with only one false negative and one false positive case.