Days Retention Time Peak area
Day-1* 2.557 180230
Day -2* 2.557 181075
Day -3* 2.554 181910
Average 2.557 181071
Standard Deviation 0.002 840.0
% RSD 0.06 0.46
Table 4: Inter-day precision of the proposed method for Hydrochlorothiazide in plasma (on three consecutive days n = 6).