Table 3. Precision of vitamin B6 and B12 analyses
| Analytes | Repeatability1) | Reproducibility2) |
| Mean±SD3) (μg/100 g) | CV4) (%) | Mean±SD (μg/100 g) | CV (%) |
| Vitamin B6 | Pyridoxine | 605.929±2.396 | 0.4 | 653.401±32.541 | 5.0 |
| Pyridoxal | 48.784±1.223 | 2.5 | 52.380±2.190 | 4.2 |
| Pyridoxamine | 20.371±0.936 | 4.6 | 16.034±0.952 | 5.9 |
| Vitamin B12 | Cyanocobalamin | 5.749±0.327 | 5.7 | 5.560±0.330 | 5.9 |
Repeatability refers to the results of independent 5 determination in triplicates obtained by analyzing a QC sample five times on the same day.
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).
Standard deviation.
Coefficient of variation, CV (%) = 100 × (SD / mean).