Matrix-Assisted Laser Desorption Ionization–Time of Flight Mass Spectrometry Accelerates Pathogen Identification and May Confer Benefit in the Outcome of Peritoneal Dialysis-Related Peritonitis

Matrix-assisted laser desorption ionization-time of flight mass spectrometry (MALDI-TOF MS) and conventional standard methods were compared for time to pathogen identification and impact on clinical outcomes in peritoneal dialysis-related peritonitis patients. The MALDI-TOF MS method identified the causative microorganisms earlier (average time saved, 64 h for all pathogens), and patients had a shorter hospital stay (mean +/- standard deviation, 5.2 +/- 4.8 days versus 8.2 +/- 4.5 days, P = 0.001).