Drugs Conc. Regression equation r2 LOD        LOQ µgmL-1   μgmL-1 CAP 2.5-25 A= 2501.7x + 3073.7 0.9995 0.7 2.3 HCT 2.5-25 A= 3841.3x + 4744.2 0.9998 0.4 1.9 FRS 2.5-25 A = 2419.8x +2988.8 0.9995 0.7 2.2 CAP: captopril; HCT: hydrochlorothiazide; FRS: furosemide; LOD: Limit of Detection; LOQ: Limit of Quantification

Table 2: Regression characteristics of the proposed method for captopril, hydrochlorothiazide and furosemide.