Matrix-assisted laser desorption ionization time-of-flight mass spectrometry is a sensitive and specific method for identification of aerococci.

Conventional methods for the species determination of human pathogenic aerococci are not reliable. We show that matrix-assisted laser desorption ionization time-of-flight mass spectrometry correctly identifies aerococci to the species level and that it can be used to identify aerococci with high specificity in the diagnostic clinical microbiology laboratory