Table 1 The intra- and inter-day relative standard deviation and accuracy (n = 5)
Analyte | Quality control concentration (µg/mL) | Intra-day relative standard deviation | Inter-day relative standard deviation | ||||
|---|---|---|---|---|---|---|---|
Measured value (µg/mL) | RSD (%) | Accuracy (%) | Measured value (µg/mL) | RSD (%) | Accuracy (%) | ||
Colistin sulfate | 0.1 | 0.09 ± 0.00 | 4.10 | 88.21 | 0.10 ± 0.01 | 8.45 | 97.77 |
1 | 1.08 ± 0.03 | 2.73 | 107.98 | 1.01 ± 0.07 | 6.60 | 101.12 | |
8 | 7.89 ± 0.28 | 3.58 | 98.65 | 7.94 ± 0.27 | 3.37 | 99.30 | |
Tigecycline | 0.05 | 0.05 ± 0.00 | 3.19 | 108.24 | 0.05 ± 0.00 | 7.16 | 104.15 |
0.5 | 0.47 ± 0.02 | 3.24 | 93.97 | 0.48 ± 0.03 | 5.90 | 95.99 | |
4 | 4.20 ± 0.39 | 9.32 | 104.97 | 4.13 ± 0.27 | 6.56 | 103.32 | |