Table 5. Detection of Gram-positive identification and resistance determinants from polymicrobial blood cultures by Verigene BC-GP (n = 95).
| Culture Results | Total | Verigene BC-GP Results | ||
| Match Culture | Target Missed (False Negative) | Additional Target (False Positive) | ||
| Two organisms | ||||
| One of two on BC-GP panel | 20 | 16/20 | 3 Streptococcus spp. | 1 Staphylococcus spp. |
| Neither on BC-GP panel | 4 | 4/4 | ||
| CoNS + CoNSa | 11 | 11/11 | ||
| S. epidermidis + CoNS | 24 | 19/24 | 5 S. epidermidis | |
| S. aureus + CoNS | 3 | 3/3 | ||
| S. lugdunensis + CoNS | 1 | 0/1 | 1 S. lugdunensis | 1 S. epidermidis |
| S. lugdunensis + Listeria b | 1 | 1/1 | ||
| S. epidermidis + S. pyogenes | 1 | 0/1 | 1 S. epidermidis | |
| S. epidermidis + S. agalactiae | 1 | 0/1 | 1 S. epidermidis | |
| S. aureus + S. agalactiae | 1 | 1/1 | ||
| Enterococcus c + CoNS | 9 | 5/9 | 4 CoNS | |
| Enterococcus + S. aureus | 2 | 0/2 | 2 S. aureus | |
| Enterococcus + S. epidermidis | 5 | 1/5 | 4 S. epidermidis | |
| Enterococcus + S. agalactiae | 1 | 1/1 | ||
| Streptococcus. spp. + CoNS | 3 | 1/3 | 2 Streptococcus spp. | |
| Streptococcus spp. (×2) | 1 | 1/1 | ||
| Three organisms | ||||
| E. faecalis + E. faecium + GNR d | 1 | 1/1 | ||
| E. faecalis + Bacillus e + GNR | 1 | 0/1 | 1 Streptococcus spp. | |
| Streptococcus spp. (×2) + GNR | 2 | 2/2 | ||
| E. faecalis + CoNS + Yeast | 1 | 0/1 | 1 CoNS | |
| S. aureus + S. epidermidis + Dermacoccus | 1 | 1/1 | ||
| S. epidermidis + CoNS + CoNS | 1 | 0/1 | 1 S. epidermidis | |
| Total | 95 | 68/95 | ||
a
Coagulase negative Staphylococcus species, not including S. epidermidis and S. lugdunensis.
b
Contrived culture.
c
E. faecalis or E. faecium.
d
Gram-negative rod.
e
Bacillus spp. not anthracis.