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Precision of the determination of crocetin in human serum (n= 5)
| Direct precipitation | Solid phase extraction | ||||
|---|---|---|---|---|---|
| Cnominal (µg/ml) |
Intraday CV (%) | Interday CV (%) | Cnominal (µg/ml) |
Intraday CV (%) | Interday CV (%) |
| 0.05 | 2.6 | 4.08 | 0.5 | 5.43 | 5.79 |
| 0.1 | 0.48 | 6.03 | 1 | 0.64 | 12.74 |
| 0.25 | 0.37 | 3.74 | 1.25 | 4.81 | 5.13 |
| 0.5 | 1.52 | 1.69 | 1.75 | 4.59 | 5.91 |
| 1 | 0.66 | 3.56 | 2.5 | 3.88 | 0.02 |
| 1.25 | 0.74 | 3.52 | 5 | 1.01 | 5.65 |
