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Bacterial Identification by Matrix-Assisted Laser Desorption Ionization Time of Flight Mass Spectrometry


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Bruker Biotyper MALDI TOF Mass Spectrometer versus BD Phoenix Automated Microbiology System Identification of Gram-Negative Bacilli2

Slide 18

February 2012

The 440 isolates included 308 common Gram-negative bacilli, defined as organism types seen more than once a week in our laboratory. This included organisms such as Escherichia coli and Pseudomonas aeruginosa. Both systems identified 93% of common isolates to the species level, and the BD Phoenix and mass spectrometry systems identified 95% and 96% of common isolates, respectively, to the genus level. There was no statistical difference between the systems for identification of common Gram-negative bacilli.

Bruker Biotyper versus BD Phoenix2


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