Table 4. Vancomycin MIC values (mg/L) for 13 S. aureus isolates from clinical blood cultures as determined by the Etest, macrodilution and CellDirector 3D (4 h readout).
| Clinical isolate | Etest | Macrodilution | CellDirector 3D | CellDirector 3Dinoculum, CFU/mL |
|---|---|---|---|---|
| 1 | 1.5 | 1.0 | 2.1 | 5x106 |
| 2 | 2.0 | 2.0 | 2.1 | 2x106 |
| 3 | 2.0 | 2.0 | 2.3 | 9x106 |
| 4 | 1.5 | 1.0 | 1.2 | 8x105 |
| 5 | 2.0 | 1.0 | 0.80 | 4x105 |
| 6 | 1.5 | 2.0 | 0.56 | 2x105 |
| 7 | 2.0 | 1.0 | 2.0 | 4x106 |
| 8 | 1.5 | 1.0 | 1.4 | 3x106 |
| 9 | 2.0 | 1.0 | 0.93 | 7x105 |
| 10 | 2.0 | 1.0 | 0.75* | 1x105 |
| 11 | 1.5 | 1.0 | 1.5 | 9x105 |
| 12 | 2.0 | 2.0 | 2.0 | 3x106 |
| 13 | 2.0 | 1.0 | 2.1 | 6x105 |
* Read at 6 h due to no visible growth at 4 h