An in-house assay is superior to Sepsityper for direct matrix-assisted laser desorption ionization-time of flight (MALDI-TOF) mass spectrometry identification of yeast species in blood cultures

J Clin Microbiol. 2015 May;53(5):1761-4. doi: 10.1128/JCM.03600-14. Epub 2015 Mar 11.

Abstract

We developed an in-house assay for the direct identification, by matrix-assisted laser desorption ionization-time of flight (MALDI-TOF) mass spectrometry, of yeasts in blood culture. Sixty-one representative strains from 12 species were analyzed in spiked blood cultures. Our assay accurately identified 95 of 107 (88.8%) positive blood cultures and outperformed the commercial Sepsityper kit (81.7% identification).

Publication types

  • Evaluation Study

MeSH terms

  • Blood / microbiology*
  • Fungemia / diagnosis*
  • Fungemia / microbiology*
  • Humans
  • Microbiological Techniques / methods*
  • Sensitivity and Specificity
  • Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization / methods*
  • Yeasts / chemistry
  • Yeasts / classification*
  • Yeasts / isolation & purification*