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Evaluation of a Fully Automated System (RAISUS) for Rapid Identification and Antimicrobial Susceptibility Testing of Staphylococci

Department of Infection Control and Laboratory Diagnostics, Tohoku University Graduate School of Medicine, Sendai, Miyagi 980-8574, Japan

Received 18 May 2005/ Returned for modification 10 July 2005/ Accepted 20 August 2005

RAISUS is a system for rapid bacterial identification and antimicrobial susceptibility testing. RAISUS and VITEK showed 97.8% and 75.9% agreement in identification of 45 Staphylococcus aureus strains and 58 coagulase-negative staphylococci (CoNS), respectively, and RAISUS and CLSI (formerly NCCLS) methods showed 87.2% and 87.9% agreement in the MICs for S. aureus and CoNS, respectively. RAISUS provided these data within 3.75 h, suggesting its utility for clinical bacteriological laboratories.