Table 3.
Polymicrobial BCs: identification results of the direct MALDI-TOF MS ID and Pheno ID compared to culture-based ID.
| Direct MALDI-TOF ID | MALDI-TOF score value | Additional organism from culture ID | Accelerate Pheno ID | Comment | |||
|---|---|---|---|---|---|---|---|
| 3.000–2.300 | 2.299–2.000 | 1.999–1.700 | <1.700 | ||||
| Enterobacter cloacae | 1 | Staphylococcus warneri | No identification | Suspected off-panel, no AST | |||
| Klebsiella oxytoca | 1 | Citrobacter freundi | Klebsiella spp. | Klebsiella spp. detected correctly | |||
| Klebsiella pneumoniae | 1 | Staphylococcus haemolyticus | Klebsiella spp. | Gram-negative organism detected correctly | |||
| Klebsiella pneumoniae | 1 | Bacillus circulans | Klebsiella spp./additional bacteria or yeasts, no AST, growth control failure | ||||
| Enterococcus faecalis | 1 | Pseudomonas oryzihabitans | Enterococcus faecalis | Gram-positive organism detected correctly, no AST | |||
| Enterococcus faecalis | 1 | Streptococcus parasanguinis | Enterococcus faecalis | Gram-positive organism detected correctly, no AST | |||
| Enterococcus faecalis | 1 | Klebsiella pneumoniae | Enterococcus faecalis, Klebsiella spp. | Gram-negative organism detected correctly, no AST | |||