Table 1 Direct MALDI-TOF results from 199 blood culture bottles by lysis method and cut off value used
Species identified | Number of identifications of each species made by direct MALDI-TOF from a single blood culture bottle using: | |||||
|---|---|---|---|---|---|---|
Cut off value ≥ 1.700 | Cut off value ≥ 2.000 | |||||
Saponin | SDS | Sepsi-Typer | Saponin | SDS | Sepsi-Typer | |
Gram positives | ||||||
Actinomyces oris | 1 | 1 | 1 | 0 | 0 | 0 |
Clostridium innocuum | 1 | 0 | 0 | 0 | 0 | 0 |
Corynebacterium amycolatum | 1 | 1 | 1 | 0 | 1 | 0 |
Corynebacterium mucifaciens | 0 | 1 | 0 | 0 | 0 | 0 |
Corynebacterium tuberculostearicum | 0 | 0 | 1 | 0 | 0 | 0 |
Enterobacter cloacae | 3 | 3 | 3 | 2 | 3 | 3 |
Enterococcus faecalis | 4 | 4 | 4 | 0 | 2 | 3 |
Enterococcus faecium | 2 | 7 | 7 | 1 | 7 | 7 |
Granulicatella adiacens | 0 | 1 | 1 | 0 | 1 | 1 |
Kocuria rhizophila | 0 | 1 | 1 | 0 | 0 | 0 |
Micrococcus luteus | 2 | 3 | 3 | 1 | 2 | 2 |
Propionibacterium acnes | 0 | 2 | 3 | 0 | 1 | 2 |
Staphylococcus aureus | 18 | 17 | 17 | 12 | 16 | 17 |
Staphylococcus capitis | 13 | 11 | 13 | 8 | 7 | 6 |
Staphylococcus cohnii | 0 | 1 | 1 | 0 | 1 | 1 |
Staphylococcus epidermidis | 23 | 19 | 17 | 11 | 8 | 7 |
Staphylococcus haemolyticus | 2 | 2 | 2 | 0 | 1 | 2 |
Staphylococcus hominis | 11 | 10 | 11 | 8 | 10 | 10 |
Streptococcus agalactiae | 1 | 1 | 1 | 0 | 1 | 1 |
Streptococcus anginosus | 1 | 0 | 0 | 0 | 0 | 0 |
Streptococcus constellatus | 1 | 1 | 2 | 0 | 0 | 0 |
Streptococcus dysgalactiae | 0 | 1 | 1 | 0 | 0 | 0 |
Streptococcus intermedius | 0 | 1 | 1 | 0 | 0 | 0 |
Streptococcus lutetiensis | 0 | 1 | 1 | 0 | 0 | 0 |
Streptococcus mutans | 0 | 2 | 1 | 0 | 1 | 1 |
Streptococcus parasanguinis | 0 | 1 | 1 | 0 | 0 | 1 |
Streptococcus pneumoniae | 0 | 1 | 1 | 0 | 1 | 1 |
Streptococcus pyogenes | 0 | 3 | 3 | 0 | 2 | 3 |
Streptococcus sanguinis | 1 | 4 | 4 | 0 | 2 | 3 |
Gram negatives | ||||||
Bacteroides fragilis | 2 | 0 | 0 | 2 | 0 | 0 |
Escherichia coli | 32 | 35 | 36 | 28 | 34 | 36 |
Klebsiella oxytoca | 3 | 3 | 3 | 3 | 3 | 3 |
Klebsiella pneumoniae | 5 | 5 | 5 | 4 | 5 | 5 |
Moraxella catarrhalis | 1 | 1 | 1 | 0 | 1 | 1 |
Morganella morganii | 2 | 2 | 2 | 2 | 2 | 2 |
Proteus mirabilis | 4 | 4 | 4 | 3 | 3 | 4 |
Pseudomonas aeruginosa | 3 | 2 | 3 | 3 | 2 | 2 |
Serratia marcescens | 3 | 2 | 3 | 1 | 2 | 3 |
Serratia ureilytica | 0 | 1 | 0 | 0 | 1 | 0 |
No identification | 59 | 44 | 40 | 110 | 79 | 72 |
Total | 199 | 199 | 199 | 199 | 199 | 199 |