title: Comparison of MicroScan WalkAway system and Vitek system for identification of gram-negative bacteria.
abstract: In a prospective side-by-side comparison conducted from September through November 1994, we compared the MicroScan WalkAway system, a conventional biochemical identification system (Dade MicroScan, Inc., Sacramento, Calif.), with the Vitek system (bioMerieux Vitek, Hazelwood, Mo. [analysis software version AMS-RO8.2] for the identification of gram-negative bacteria. Three-hundred thirty-one nonurine isolates and 493 urine isolates were tested. For nonurinary isolates, there was 91.5% agreement between the two methods. For urinary isolates, there was 97.4% agreement between the two methods. Overall, there was 95% agreement between the two systems. The results suggest that the current version of the MicroScan WalkAway system with conventional panels is essentially comparable to the current Vitek system.
authors.affiliation: Department of Pathology and Laboratory Medicine, University of Pennsylvania Medical Center, Philadelphia 19104-4283, USA.
authors.forename: S
authors.initials: S
authors.lastname: Rhoads
authors.forename: L
authors.initials: L
authors.lastname: Marinelli
authors.forename: C A
authors.initials: CA
authors.lastname: Imperatrice
authors.forename: I
authors.initials: I
authors.lastname: Nachamkin
mesh_terms: D015373:Bacterial Typing Techniques / Q000295:instrumentation*; D006090:Gram-Negative Bacteria / Q000145:classification*; D016905:Gram-Negative Bacterial Infections / Q000175:diagnosis*; D006801:Humans; D011446:Prospective Studies; D015203:Reproducibility of Results; D014556:Urine / Q000382:microbiology