Table 4 Precision of HPLC/DAD assay for loganin analysis for Cornus officinalis
| Cornus officinalis | Loganin (mg/mL) |
|
| Intra-day3) | Inter-day4) |
|
| Mean±SD1) | 8.04±0.14 | 7.79±0.18 |
| RSD (%)2) | 1.77 | 2.33 |
1)Standard deviation
2)RSD(%): relative standard deviation = 100 × (SD/mean)
3)Intra-day: repeatability refers to the results of 5 independent determinations carried out on a sample by analysing 5 replicates of the sample on the same day.
4)Inter-day: reproducibility refers to the results of 4 independent determinations carried out on a sample by analyzing 4 replicates of the sample at different periods of time.