Concentration μg mL-1 Day 1 Day 2 Day 3 Mean (n=3) % RSD Interday Precision (n=24) % RDS
1 99.98 99.87 100.24 100.03 0.19 99.96 0.3
2.5 98.77 98.88 98.78 98.81 0.062
5 100.21 100.13 100.78 100.37 0.353
7.5 101.45 100.35 100.44 100.75 0.606
10 99.88 100.6 99.96 100.15 0.394
15 98.77 98.86 98.8 98.81 0.046
20 101.5 100.33 100.4 100.74 0.651
25 99.98 99.96 100.15 100.03 0.104
Table 2: Inter-day variation of pregabalinusing HPLC method.