Nominal concentration | Intra-day n = 10 | CV (%) | Bias (%) | Inter-day (n = 15) | CV (%) | Bias (%) | |
Mean measured concentration ± SD | Mean measured concentration ± SD | ||||||
Piperacillin (228 nm) | |||||||
30 | 29.68 ± 0.15 | 0.5 | 1.07 | 30.47 ± 1.22 | 4.00 | 1.57 | |
50 | 48.93 ± 0.65 | 1.33 | 2.13 | 50.68 ± 2.41 | 4.75 | 1.36 | |
200 | 189.88 ± 2.51 | 1.32 | 5.06 | 199.21 ± 12.45 | 6.25 | 0.4 | |
400 | 384.86 ± 7.94 | 2.06 | 3.78 | 401.29 ± 23.1 | 5.76 | 0.32 | |
Ciprofloxacin (280 nm) | |||||||
0.5 | 0.46 ± 0.02 | 3.39 | 7.25 | 0.45 ± 0.02 | 4.25 | 9.27 | |
1 | 0.93 ± 0.02 | 2.00 | 7.4 | 0.92 ± 0.02 | 2.52 | 8.18 | |
4 | 4.01 ± 0.14 | 3.43 | 0.33 | 4.04 ± 0.13 | 3.31 | 0.99 | |
8 | 8.03 ± 0.21 | 2.59 | 0.43 | 8.2 ± 0.32 | 3.86 | 2.47 |