Table 3. Inter-day and inter-day precision of vitamin B12

Precision Recovery (%) SD RSD (%)
Intra-day precision 103.72 5.51 5.31
98.96 5.08 5.13
93.61 3.94 4.21
84.69 0.83 0.98
Inter-day precision 106.57 2.53 2.37
95.02 2.05 2.16
89.59 3.49 3.90
83.41 2.01 2.40
All values are meanĀ±SD of three replicates.
RSD, relative standard deviation.