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.