title: Evaluation of a new identification system, Crystal Enteric/Non-Fermenter, for gram-negative bacilli.
abstract: A total of 505 fermentative and 201 nonfermentative gram-negative bacilli, identified by conventional methods, were tested by the Crystal Enteric/Non-Fermenter ID kit and by the API 20E or API 20NE identification system. The overall correct results for fermenters were 92.9% by the Crystal kit and 89.1% by the API 20E system. The false identifications (genus and species incorrect) accounted for 3.1 and 7.1% for the Crystal and API systems, respectively. For nonfermenters, figures for correct identifications by the two systems were comparable (Crystal, 75.9%; API 20NE, 75.3%) while the API 20NE system gave twice as many incorrect results (13.8%) as Crystal (6.3%); however, Crystal failed to precisely identify several species included in a "miscellaneous" group. The Crystal Enteric/Non-Fermenter system is an easy-to-use kit which compares favorably with other commercial systems.
authors.affiliation: Microbiology Unit, University of Louvain, Brussels, Belgium.
authors.forename: G
authors.initials: G
authors.lastname: Wauters
authors.forename: A
authors.initials: A
authors.lastname: Boel
authors.forename: G P
authors.initials: GP
authors.lastname: Voorn
authors.forename: J
authors.initials: J
authors.lastname: Verhaegen
authors.forename: F
authors.initials: F
authors.lastname: Meunier
authors.forename: M
authors.initials: M
authors.lastname: Janssens
authors.forename: L
authors.initials: L
authors.lastname: Verbist
mesh_terms: D015373:Bacterial Typing Techniques / Q000706:statistics & numerical data; D001431:Bacteriological Techniques / Q000706:statistics & numerical data; D003951:Diagnostic Errors; D004755:Enterobacteriaceae / Q000145:classification / Q000302:isolation & purification / Q000378:metabolism; D005285:Fermentation; D006090:Gram-Negative Bacteria / Q000145:classification* / Q000302:isolation & purification / Q000378:metabolism; D016905:Gram-Negative Bacterial Infections / Q000175:diagnosis / Q000382:microbiology; D006801:Humans; D015661:Pasteurellaceae / Q000145:classification / Q000302:isolation & purification / Q000378:metabolism; D014737:Vibrionaceae / Q000145:classification / Q000302:isolation & purification / Q000378:metabolism