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Table 1 Results of MS analysis for microorganisms’ identification in positive blood cultures using SepsiTyper kit and in-house method

From: Cheap and rapid in-house method for direct identification of positive blood cultures by MALDI-TOF MS technology

Species (as identified by the routine method) N SepsiTyper kit In-house method
Sa < 1.7 1.7 ≤ S ≤ 1.999 S ≥ 2.0 No identification S < 1.7 1.7 ≤ S ≤ 1.999 S ≥ 2.0 No identification
Acinetobacter baumannii 6 1 4 1   3 3   
Bacteroides fragilis 2 2 2    2    2
Campylobacter fetus 2 2     1    1
Candida albicans 5 1 3   1 3    2
Candida tropicalis 2 1 1       2
Citrobacter freundii 2   1 1   1   1  
Citrobacter koseri 4   2 2   2 2   
Clostridium perfringens 2   1 1   1 1   
Corynebacterium amycolatum 2   2    1    1
Corynebacterium jeikeium 1 1     1    
Enterobacter aerogenes 4   2 2   3 1   
Enterobacter cloacae 4   2 2   1 3   
Enterococcus faecalis 11 2 7 2   6 4   1
Escherichia coli 17   6 11   7 8 2  
Fusobacterium nucleatum 2 1 1    1    1
Haemophilus influenzae 3 2    1     3
Klebsiella oxytoca 2   2    2    
Klebsiella pneumoniae 11   6 5   3 8   
Micrococcus luteus 3   1 2   1 2   
Morganella morganii 2    2    2   
Plesiomonas shigelloides 3   2 1   2 1   
Propionibacterium acnes 4 1 3    3 1   
Proteus mirabilis 4    4    4   
Providencia rettgeri 4   2 2   1 2 1  
Pseudomonas aeruginosa 6   2 4   3 3   
Serratia marcescens 3    3   3    
Staphylococcus aureus 22   9 13   7 11 4  
Staphylococcus capitis 4   3 1   3 1   
Staphylococcus epidermidis 16 1 9 6   9 6   1
Staphylococcus haemolyticus 3 1 2    2    1
Staphylococcus hominis 4   1 3    4   
Staphylococcus lugdunensis 3   2 1   1 2   
Stenotrophomonas maltophilia 2   2    2    
Streptococcus agalactiae 2   1 1   1 1   
Streptococcus dysgalactiae 4 1 3    3    1
Streptococcus gallolyticus 2   2    2    
Streptococcus pneumoniae 5 1 2 2   2 2 1  
Streptococcus pyogenes 3 1 2    2    1
Streptococcus sanguinis 3   3    2    1
  1. a S Score