Drug Range µg/mL Slope Intercept R2 LOD µg/mL LOQ µg/mL Eprosartan Mesylate 216-576 15665 +20062 0.999 3 10 Hydrochlorthiazide 9-24 4259.4 —185.5 0.999 0.5 2

Table 2: Linearity study.