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Journal of Clinical Microbiology, May 1995, 1150-1153, Vol 33, No. 5
J Renneberg, K Rieneck and E Gutschik
The purpose of the investigation was to evaluate two commercially available
identification systems: a new modification of the Staph-Zym system (Rosco,
Tastrup, Denmark) and the Staph ID 32 API system (API System, BioMerieux,
Paris, France). A local standard method to be used in routine laboratories
was also evaluated. A total of 200 staphylococcal isolates, including
strains from both the American Type Culture Collection and the Czechoslovak
Collection of Microorganisms as well as 89 clinical isolates, were used in
tests of all three identification systems. The Staph ID 32 API system
identified from 50 to 100% of the reference strains and 82.1% of the
clinical isolates correctly. The Staph-Zym system identified from 90 to
100% of the reference strains and 82.1% of the clinical isolates correctly.
Most misidentifications were of minor importance, but in both systems major
failures appeared (Staphylococcus aureus was identified as a coagulase-
negative staphylococcus). Both systems needed backup from a reference
laboratory to determine if two isolates were of the same strain.
Copyright © 1995 by the American Society for Microbiology. All rights reserved.
Evaluation of Staph ID 32 system and Staph-Zym system for identification of coagulase-negative staphylococci
Department of Clinical Microbiology, Bispebjerg Hospital, University of Copenhagen, Denmark.
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