Table 1.
Daptomycin MIC distributiona
| Daptomycin MIC (μg/ml) | No. of isolates at each MIC level (% of total) determined by: |
||
|---|---|---|---|
| Trek | Etest | Microscan | |
| ≤0.25 | 5 (3.11) | 44 (27.33) | 37 (22.98)b |
| 0.38 | 57 (35.40) | ||
| 0.5 | 118 (73.29) | 32 (19.88) | 123 (76.40) |
| 0.75 | 35 (21.74) | 27 (16.77) | |
| 1 | 3 (1.86) | 1 (0.62) | 1 (0.62) |
| Essential agreement (%)c | 97.52 | 97.52 | |
a
All isolates were tested using the three available daptomycin MIC testing methods at the time of the study.
b
Data for Microscan are ≤0.25 μg/ml.
c
Essential agreement is obtained by comparison to custom-made frozen microdilution trays prepared by Trek.