The Accelerate Pheno™ System (APS), a new platform that combines rapid identification (ID) of bacteria and yeasts and phenotypic antimicrobial susceptibility testing (AST) in a single assay, has been evaluated directly from positive blood cultures in comparison to routine laboratory methods. The APS ID results showed an overall sensitivity and specificity of 92.6% and 99.6%, respectively. With regard to AST results, 31 discrepancies (8 single errors and 23 combined errors) were observed, including 13 major errors (3.3%) and 18 minor errors (4.6%) mainly involving Pseudomonas aeruginosa. No very major error was observed. The APS ID results were obtained in 1.5 h and the AST results were available in 7 h, on average 34.1 h before routine laboratory methods. This reduction in AST time-to-result represents one of the main advantages of this technology, reducing the time to provide to the physician the microbiological report.
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