title: How useful is the detection kit for antibody to Helicobacter pylori in urine (URINELISA) in clinical practice?
abstract: OBJECTIVE
  Increased knowledge of the significance of Helicobacter pylori (H. pylori) infection in gastric disorders has accelerated the trend of screening patients with dyspepsia for its infection. Serological examination of antibody for H. pylori has been widely performed. Recently, a urine-based enzyme-linked immunosorbent assay (URINELISA) kit for detection of antibody for H. pylori has been developed. Accordingly, we evaluated its diagnostic accuracy in clinical practice.
  
  
  METHODS
  Subjects of this study were 132 patients who presented at our university hospital because of dyspeptic symptoms (81 men, 51 women; age, 41.5+/-1.4 yr). 13C urea breath test, blood drawing for serological antibody for H. pylori infection by four different kits, and urine collection for the URINELISA test for detection of the antibody were performed. Diagnostic accuracy of the commercially available antibodies in serum and in urine were investigated using the results of the 13C urea breath test as the gold standard.
  
  
  RESULTS
  Sensitivity, specificity, and accuracy of URINELISA were 86.3% (95% confidence intervals [CI], 76-93%), 91.5% (95% CI, 81-97%), and 88.6% (95% CI, 82-93%), respectively, which were comparable to those of imported serological kits.
  
  
  CONCLUSIONS
  The URINELISA kit for detecting anti-H. pylori antibody in urine provides diagnostic accuracy comparable to that of imported kits for detecting antibodies in serum and is considered to be clinically useful for the diagnosis of H. pylori infection.
authors.affiliation: Department of Gastroenterology, Juntendo University, School of Medicine, Tokyo, Japan.
authors.forename: H
authors.initials: H
authors.lastname: Miwa
authors.forename: M
authors.initials: M
authors.lastname: Hirose
authors.forename: S
authors.initials: S
authors.lastname: Kikuchi
authors.forename: T
authors.initials: T
authors.lastname: Terai
authors.forename: R
authors.initials: R
authors.lastname: Iwazaki
authors.forename: O
authors.initials: O
authors.lastname: Kobayashi
authors.forename: Y
authors.initials: Y
authors.lastname: Takei
authors.forename: T
authors.initials: T
authors.lastname: Ogihara
authors.forename: N
authors.initials: N
authors.lastname: Sato
mesh_terms: D000328:Adult; D000907:Antibodies, Bacterial / Q000652:urine*; D004797:Enzyme-Linked Immunosorbent Assay; D005260:Female; D005756:Gastritis / Q000175:diagnosis* / Q000276:immunology; D016481:Helicobacter Infections / Q000175:diagnosis* / Q000276:immunology; D016480:Helicobacter pylori / Q000276:immunology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D011237:Predictive Value of Tests; D011933:Reagent Kits, Diagnostic
chemical_list: D000907:Antibodies, Bacterial; D011933:Reagent Kits, Diagnostic