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The assay precision of the method (n number of determinations at each concentration).
| Nominal concentration (μg/mL) | Intraday assay (n = 6) | Interday assay (n = 3) | ||
|---|---|---|---|---|
| Calculated concentration (μg/mL) | RSD% | Calculated concentration (μg/mL) | RSD% | |
| 0.5 | 0.55 ± 0.02 | 2.5 | 0.52 ± 0.04 | 4.8 |
| 1.0 | 1.15 ± 0.07 | 3.3 | 1.01 ± 0.11 | 7.9 |
