title: Laboratory Experience with the Liaison Analyzer in the Diagnosis ofClostridium Difficile-Associated Diarrhea.
abstract: BACKGROUND
  Chemiluminescent or enzyme-linked fluorescent immunoassays are commonly used to diagnoseClostridium difficile-associated diarrhea.
  
  
  METHODS
  The LIAISON analyzer (DiaSorin, Italy) was compared to miniVIDAS (bioMérieux, France) and, furthermore, to culture of toxigenic strains. In total, 249 native stool samples were analyzed. Sensitivities, specificities, and positive and negative predictive values were investigated. Furthermore, performance under routine conditions was assessed.
  
  
  RESULTS
  The glutamate dehydrogenase chemiluminescent immunoassay (GDH-CLIA) assay revealed a high sensitivity and negative predictive value. The toxins A&B assays exhibited approximately the same low sensitivity and high specificity. Technical drawbacks experienced with the LIAISON analyzer in 48% of the analyses considerably delayed the time to the first diagnostic report and interfered with laboratory routine workflow.
  
  
  CONCLUSIONS
  The analytical performance of the investigated platforms should be reflected in the context of implementation into the laboratory workflow.
authors.affiliation: Institute of Medical Microbiology, Virology and Hygiene, University Hospital Rostock , Rostock, Germany.
authors.forename: Orsolya
authors.initials: O
authors.lastname: Benedek
authors.affiliation: Institute of Medical Microbiology, Virology and Hygiene, University Hospital Rostock , Rostock, Germany.
authors.forename: Andreas
authors.initials: A
authors.lastname: Podbielski
authors.affiliation: Institute of Medical Microbiology, Virology and Hygiene, University Hospital Rostock , Rostock, Germany.
authors.forename: Philipp
authors.initials: P
authors.lastname: Warnke
keywords: Clostridium difficile; GDH; LIAISON; TcdA; TcdB; miniVIDAS