TABLE 3.
Evaluation of QuickFISH, BC-GP, and MALDI-TOF MS for 13 polymicrobial blood cultures
| Blood culture | Definitive ID | Gram stain resulta | Result |
||
|---|---|---|---|---|---|
| MALDI-TOF MS | QuickFISH | BC-GP | |||
| BC245 | S. hominis | GPCL | NDb | CoNS | Staphylococcus sp. |
| S. marcescens | GNR | S. marcescens | ND | —c | |
| BC115 | C. freundii | GNR | C. freundii | ND | — |
| Micrococcus sp. | ND | ND | — | — | |
| BC31 | Viridans streptococci | GPPC | S. pneumoniae | ND | Streptococcus sp. |
| S. epidermidis | ND | ND | — | ND | |
| BC44 | E. faecium/vanA | GPPC | ND | Not E. faecalis | E. faecium/vanA |
| K. pneumoniae | ND | ND | — | — | |
| BC3 | K. pneumoniae | GNR | K. pneumoniae | K. pneumoniae | — |
| E. cloacae | GNR | ND | E. coli | — | |
| BC124 | S. marcescens | GNR | S. marcescens | ND | — |
| P. aeruginosa | GNR | ND | ND | — | |
| BC71 | K. oxytoca | GNR | ND | ND | — |
| Enterobacter asburiae | GNR | E. asburiae | ND | — | |
| BC77 | K. oxytoca | GNR | ND | ND | — |
| Enterobacter asburiae | GNR | E. asburiae | ND | — | |
| BC37 | C. indologenes | GNR | ND | ND | — |
| A. ursingii | GNR | ND | ND | — | |
| R. radiobacter | GNR | ND | ND | — | |
| BC85d | S. cohnii | GPCL | ND | CoNS | Staphylococcus sp. |
| Micrococcus sp. | GPCL | ND | ND | ND | |
| BC105d | S. epidermidis | GPCL | ND | CoNS | ND |
| S. hominis | GPCL | ND | CoNS | Staphylococcus sp. | |
| E. faecium/vanA | ND | E. faecium | — | E. faecium/vanA | |
| BC100d | S. aureus | GPCL | S. aureus | S. aureus | S. aureus |
| S. aureus/mecA | GPCL | S. aureus | S. aureus | S. aureus/mecA | |
| BC122d | S. anginosus group | GPPC | S. anginosus group | Not E. faecalis | S. anginosus group |
| Granulicatella sp. | GPPC | ND | Not E. faecalis | ND | |
a
GNR, Gram-negative rod; GPCL, Gram-positive cocci in clusters; GPPC, Gram-positive cocci in pairs and chains.
b
ND, not detected.
c
—, not done.
d
Excluded from data analysis.