Prospective evaluation of a whole-blood antibody test (FlexPack HP) for in-office diagnosis of Helicobacter pylori infection in untreated patients.
Objectives: Rapid, reliable in-office tests are needed for applying the adopted screen-and-treat strategy in Helicobacter pylori-positive young dyspeptic patients.Design: We have evaluated the performance characteristics of a whole-blood antibody (WBA) test for the detection of H. pylori infection u...
| Publicado en: | European Journal of Gastroenterology & Hepatology Vol. 12; no. 7; pp. 727 - 732 |
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| Autores principales: | , , , , , , , , , , , , , , , |
| Formato: | clinical trial research Journal Article |
| Publicado: |
Lippincott Williams & Wilkins
2000 Jul
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=105974606&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 105974606 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 0954691X 8CE jtl: European Journal of Gastroenterology & Hepatology issn: 0954691X maglogo: N pubinfo: dt: 2000 Jul vid: 12 iid: 7 pid: 5086 pub: Lippincott Williams & Wilkins place: Baltimore, Maryland artinfo: ui: 105974606 105974606 NLM10929897 2009784488 10.1097/00042737-200012070-00002 NLM10929897 105974606 ppf: 727 ppct: 5 formats: tig: atl: Prospective evaluation of a whole-blood antibody test (FlexPack HP) for in-office diagnosis of Helicobacter pylori infection in untreated patients. aug: au: Ladas SD Malamou H Giota G Varzakakos I Kitsanta P Georgopoulos S Spiliadi C Raptis SA Ladas, S D Malamou, H Giota, G Varzakakos, I Kitsanta, P Georgopoulos, S Spiliadi, C Raptis, S A affil: 2nd Department of Internal Medicine, Athens University, Evangelismos Hospital, Greece sug: subj: Antibodies, Bacterial Blood Helicobacter Infections Diagnosis Helicobacter Pylori Adolescence Adult Aged Biopsy, Needle Double-Blind Studies Dyspepsia Etiology Enzyme-Linked Immunosorbent Assay Female Gastric Mucosa Microbiology Gastric Mucosa Pathology Helicobacter Infections Complications Helicobacter Infections Pathology Male Middle Age Nonparametric Statistics Predictive Value of Tests Probability Prospective Studies Reagent Kits, Diagnostic Sensitivity and Specificity Human Adolescent: 13-18 years Adult: 19-44 years Aged: 65+ years Middle Aged: 45-64 years Female Male ab: Objectives: Rapid, reliable in-office tests are needed for applying the adopted screen-and-treat strategy in Helicobacter pylori-positive young dyspeptic patients.Design: We have evaluated the performance characteristics of a whole-blood antibody (WBA) test for the detection of H. pylori infection under in-office conditions.Methods: In a prospective double-blind study, 183 untreated patients referred to a tertiary centre for endoscopy because of dyspepsia were studied. Patients were defined as H. pylori-positive if two out of three tests (histology, rapid urease test, Gram staining of biopsy smears) were positive, and H. pylori-negative if all three tests were negative. An in-office test detecting IgG antibodies to H. pylori (FlexPack HP, Abbott Diagnostics) was used with capillary blood and compared with an ELISA detecting IgG (quantitative) and IgA (qualitative) H. pylori serum antibodies.Results: Of the 183 patients, 139 were defined as H. pylori-positive. The in-office test had 79% sensitivity, 95% specificity, 98% positive and 59% negative predictive value. The respective values for IgG serum antibodies were 94, 70, 91 and 79% and those for IgA antibodies were 86, 82, 94 and 64%. About 50% of the false-negative in-office tests had a serum IgG antibody titre > 100 units. Co-evaluation of our data with published reports suggested that both the median sensitivity and negative predictive value of the kit are significantly inferior when performed with whole-blood (five studies) compared with serum (nine studies) (82 versus 92% and 82 versus 93% respectively, P < 0.035).Conclusions: Improvement of the performance characteristics of FlexPack HP in-office test is needed. However, the test may be a useful tool for identifying H. pylori-positive patients in younger age groups who could be managed without upper gastrointestinal endoscopy. pubtype: Academic Journal doctype: clinical trial research Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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