Sr. No. Standard Sample Freeze and Thaw Stability Sample Short term Stability Sample Long term Stability Sample 1 182544 179258 174877 171628 2 182338 179022 174865 171452 3 182746 179365 174822 171821 Mean 182543 179215 174855 171634 SD 204 176 29 185 % RSD 0.11 0.10 0.02 0.11 Assay -------- 98.18 95.79 94.02

Table 13: The Stability data for Hydrochlorothiazide in plasma.