Table 4 Precision of immunoaffinity-HPLC/DAD assay for vitamin B12
Sample
Precision of immunoaffinity-HPLC/DAD assay for vitamin B12
Parameters
Repeatability1)
Reproducibility2)
Infant formula (QC sample)
Mean±SD
5.57±0.48
5.36±0.52
CV (%)3)
8.60
9.69
Repeatability refers to the results of 5 independent determinations carried out in a sample by analyzing 5 replicates of the same sample in the same day. Reproducibility refers to the results of 5 independent determinations carried out in a sample by analyzing 5 replicates of the sample at different assay days. Coefficient of variation (%)=100 (SD/mean).