Evaluation of a new identification system, Crystal Enteric/Non-Fermenter, for gram-negative bacilli.
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.
Wauters
G
G
Microbiology Unit, University of Louvain, Brussels, Belgium.
Boel
A
A
Voorn
G P
GP
Verhaegen
J
J
Meunier
F
F
Janssens
M
M
Verbist
L
L
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