Table 3

Performance of MALDI-TOF/Sepsityper for identification of microorganisms from polymicrobial blood culture bottles

Organism(s) (identified by routine methods)MALDI identificationScorebGram staina
E. coli, CoNSE. coli2.43GNR, GPCCL
S. pyogenes, CoNS, viridans group StreptococcusS. pyogenes2.19GPCCH
Candida albicans, Candida glabrata, CoNSUnable to identifyNAYST
Enterococcus faecalis, CoNSE. faecalis2.35GPCCH
Klebsiella pneumoniae, Flavobacterium indologenes, Candida tropicalisK. pneumoniae2.36GNR
C. glabrata, Lactobacillus spp.Aromatoleum spp.1.29YST, GPCCH
E. coli, Citrobacter amalonaticusE. coli2.36GNR
Eubacterium lentum, Peptostreptococcus asaccharolyticusMixed Pseudomonas spp.<1.4GNR, GPC
Citrobacter freundii, Streptococcus salivariusC. freundii2.47GNR, GPCCH
Bacillus spp. CoNSUnable to identifyNAGNR, GPCCH
Klebsiella oxytoca, Enterococcus faecium, E. coliE. coli2.41GNR
S. aureus, Streptococcus agalactiaeS. agalactiae2.43GPCCH
Acinetobacter spp., CoNS 1, CoNS 2S. hominis2.14GNR,GPCCL
B. fragilis, Bacteriodes vulgatus, Clostridium clostridioformeUnable to identifyNAGNR
  • a Primary Gram stain result. GNR, Gram-negative rod; GPCCL, Gram-positive cocci in clusters; GPCCH, Gram-positive cocci in chains; YST, yeast.

  • b NA, not applicable.