| Metformin | Saxagliptin | ||||
| Concentration | % RSD | Concentration | %RSD | ||
| Intra-day Precision | Inter-day Precision | Intra-day Precision | Inter-day Precision | ||
| 80 | 0.167 | 0.144 | 0.4 | 0.452 | 1.329 |
| 120 | 1.453 | 0.572 | 0.6 | 0.546 | 0.698 |
| 160 | 0.319 | 1.396 | 0.8 | 0.871 | 0.468 |