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Intra-day and inter-day accuracy, precision and matrix effect.
| Analyte | Spiked concentration (μg/mL) | Precision (RSD%) |
Accuracy (RE%) | Matrix effect (%) | |
|---|---|---|---|---|---|
| Intra-day | Inter-day | ||||
| NT | 7.8 | 7.9 | 5.5 | 0.2 | 3.3 |
| 25 | 7.0 | 5.1 | –3.7 | 5.8 | |
| 78 | 2.3 | 1.1 | –1.9 | 5.5 | |
| CT | 7.8 | 8.4 | 5.3 | 7.5 | 5.5 |
| 25 | 6.9 | 2.9 | 0.1 | 2.7 | |
| 78 | 4.0 | 2.5 | –1.7 | 1.8 | |
Precision (RSD%)=(Standard deviation/mean)×100; Accuracy (RE%)=(Mean obtained concentration–nominal concentration)/nominal concentration×100; ME (%)=AQC/Astd×100.
