Table 3. Precision of retinol, β-carotene, α-tocopherol, and cholesterol analyses
| Analytes | Repeatability1) | Reproducibility2) |
| Mean | SD3) | RSD (%)4) | Mean | SD | RSD (%) |
| Retinol (μg/100 g) | 507.92 | 6.72 | 1.3 | 507.95 | 5.79 | 1.1 |
| β-Carotene (μg/100 g) | 73.03 | 0.82 | 1.1 | 76.52 | 4.50 | 5.9 |
| α-Tocopherol (mg/100 g) | 9.12 | 0.08 | 0.9 | 9.04 | 0.30 | 3.3 |
| Cholesterol (mg/100 g) | 49.88 | 0.55 | 1.1 | 48.90 | 0.90 | 1.8 |
1)Repeatability refers to the results of independent 5 determination in triplicates obtained by analyzing a QC sample five times on the same day.
2)Reproducibility refers to the results of independent 5 determinations in triplicates obtained by analyzing a QC sample five times on different days (once a day).
3)Standard deviation.
4)Relative standard deviation.