[Prospective study on the influence of gastroduodenal ulcer hemorrhage on the diagnostic methods in Helicobacter pylori infection].

Abstract

Urease test has a high false negative rate when is studied in patients with peptic ulcers and upper gastrointestinal bleeding. Caution should be made if urease test was used alone for diagnosis in patients with upper gastrointestinal bleeding. Urease test and culture together could be a good diagnostic method.