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| Concentration spiked (ng/mL) | Dilution fold | Mean recovery (%) ±RSDa | Er(%) |
|---|---|---|---|
| 800 | 1:2 | 97.35±2.56 | -2.65 |
| 1:5 | 98.95±1.41 | -1.05 |
aMean recovery (%) ± RSD of six determinations
Er%, Percentage relative error.
