Assessment of Reproducibility of Matrix-Assisted Laser Desorption Ionization-Time of Flight Mass Spectrometry for Bacterial and Yeast Identification.

TitleAssessment of Reproducibility of Matrix-Assisted Laser Desorption Ionization-Time of Flight Mass Spectrometry for Bacterial and Yeast Identification.
Publication TypeJournal Article
Year of Publication2015
AuthorsWestblade LF, Garner OB, MacDonald K, Bradford C, Pincus DH, A Mochon B, Jennemann R, Manji R, Bythrow M, Lewinski MA, Burnham C-AD, Ginocchio CC
JournalJ Clin Microbiol
Volume53
Issue7
Pagination2349-52
Date Published2015 Jul
ISSN1098-660X
KeywordsBacteria, Humans, Microbiological Techniques, Reproducibility of Results, Specimen Handling, Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization, Yeasts
Abstract

Matrix-assisted laser desorption ionization-time of flight (MALDI-TOF) mass spectrometry (MS) has revolutionized the identification of clinical bacterial and yeast isolates. However, data describing the reproducibility of MALDI-TOF MS for microbial identification are scarce. In this study, we show that MALDI-TOF MS-based microbial identification is highly reproducible and can tolerate numerous variables, including differences in testing environments, instruments, operators, reagent lots, and sample positioning patterns. Finally, we reveal that samples of bacterial and yeast isolates prepared for MALDI-TOF MS identification can be repeatedly analyzed without compromising organism identification.

DOI10.1128/JCM.00187-15
Alternate JournalJ Clin Microbiol
PubMed ID25926486
PubMed Central IDPMC4473194
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Lars Westblade, Ph.D.

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