Utility of matrix-assisted laser desorption ionization-time of flight mass spectrometry following introduction for routine laboratory bacterial identification

Stephen A. Neville, Annabelle LeCordier, Helen Ziochos, Mathew J. Chater, Iain B. Gosbell, Michael W. Maley, Sebastiaan J. Van Hal

Research output: Contribution to journalArticlepeer-review

173 Citations (Scopus)

Abstract

Matrix-assisted laser desorption ionization-time of flight mass spectrometry (MALDI-TOF MS) was evaluated prospectively in a diagnostic laboratory. Nine hundred twenty-seven organisms were tested in triplicate; 2,351/2,781 (85%) species and 2,681/2,781 (96%) genus identifications were correct. Known issues such as the misidentification of alpha-hemolytic streptococci as Streptococcus pneumoniae were easily corrected. Identifications cost AUD$0.45 per isolate and were available in minutes. MALDI-TOF MS is rapid, accurate, and inexpensive.
Original languageEnglish
Pages (from-to)2980-2984
Number of pages5
JournalJournal of Clinical Microbiology
Volume49
Issue number8
DOIs
Publication statusPublished - 2011

Keywords

  • bacterial diseases
  • enterobacter
  • escherichia coli
  • gram-positive bacteria
  • matrix-assisted laser desorption-ionization
  • micrococcus luteus
  • pseudomonas aeruginosa
  • salmonella
  • shigella
  • staphylococcus
  • streptococcus
  • time-of-flight mass spectrometry

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