TABLE 2.
Agreement between the BC-GP assay and standard laboratory methods for polymicrobial blood cultures
| BacT/Alert bottle type | Organism | BC-GP result | Agreement |
|---|---|---|---|
| SA | S. epidermidis (oxacillin resistant) | Staphylococcus spp. | Yes |
| E. faecium (vancomycin susceptible) | S. epidermidis | ||
| E. faecium | |||
| mecAa | |||
| SA | Streptococcus spp. | Streptococcus spp. | Yes |
| S. epidermidis | Staphylococcus spp. | ||
| S. hominis | S. epidermidis | ||
| SA | S. aureus (oxacillin susceptible) | Staphylococcus spp. | Yes |
| E. faecalis (vancomycin susceptible) | S. aureus | ||
| A. baumannii complexb | E. faecalis | ||
| Leclercia spp.b | |||
| SA | E. faecium (vancomycin susceptible) | E. faecium | Yes |
| S. mitis/oralis | Streptococcus spp. | ||
| SA | E. faecium (vancomycin susceptible) | E. faecium | Noc |
| S. mitis/oralis | Streptococcus spp. | ||
| S. pneumoniae | |||
| SA | E. faecium (vancomycin susceptible) | E. faecium | Yes |
| S. mitis/oralis | Streptococcus spp. | ||
| SA | E. faecium (vancomycin susceptible) | E. faecium | Yes |
| S. mitis/oralis | Streptococcus spp. | ||
| PF | S. aureus (oxacillin susceptible) | Staphylococcus spp. | Yes |
| K. pneumoniaea | S. aureus | ||
| PF | S. lugdunensis (oxacillin resistant) | Staphylococcus spp. | Yes |
| S. epidermidis (oxacillin resistant) | S. lugdunensis | ||
| S. epidermidis | |||
| mecAa | |||
| PF | S. epidermidis (oxacillin susceptible) | Staphylococcus spp. | No |
| S. hominis/warneri (oxacillin susceptible) | S. epidermidis | ||
| mecAa | |||
| PF | S. epidermidis (oxacillin resistant) | Staphylococcus spp. | Yes |
| S. epidermidis (oxacillin resistant) | S. epidermidis | ||
| mecAa | |||
| PF | S. aureus (oxacillin susceptible) | Staphylococcus spp. | Yes |
| Coagulase-negative staphylococcid | S. aureus | ||
| PF | E. faecalis (vancomycin susceptible) | Not detected | No |
| E. coli | Not detected | ||
| PF | S. epidermidis (oxacillin resistant) | Staphylococcus spp. | Yes |
| S. epidermidis (oxacillin resistant) | S. epidermidis | ||
| mecAa | |||
| PF | S. aureus (oxacillin susceptible) | Staphylococcus spp. | Yes |
| S. pyogenes | S. aureus | ||
| Streptococcus spp. | |||
| S. pyogenes | |||
| PF | Coagulase negative staphylococcid | Staphylococcus spp. | Yes |
| S. mitis/oralis | Streptococcus spp. |
a
The mecA gene is detected only in S. aureus or S. epidermidis.
b
Organism not included in the Verigene BC-GP panel.
c
Discordant result for S. pneumoniae only.
d
Species identification and susceptibility testing was not performed.