S. No. Standard Sample Freeze and Thaw Stability Sample Short Term Stability Sample Long Term Stability Sample 1. 201585 185470 195862 187452 2. 204758 189562 194258 187569 3. 206984 188475 196541 187414 Mean 204442 187835.7 195554 187478 SD 2713 2120 1172 81 %RSD 1.33 1.13 0.60 0.04 Assay 91.88 95.65 91.70

Table 9: The Stability data for Metformin in plasma.