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Table 1 Regression equation, correlation coefficient (r), linear range and detection limit of the five diuretic drugs

From: Simultaneous determination of five diuretic drugs using quantitative analysis of multiple components by a single marker

Studied drug Regression Equation r (Linear Range)/
(μg·mL−1)
(Detection Limit)/μg·mL−1
Etacrynic acid y = 20.301x − 1.624 0.9993 2.5–150 0.25
Torasemide y = 33.204x + 3.131 0.9998 2.5–150 0.08
Furosemide y = 27.634x − 0.970 0.9999 2.5–150 0.05
Azosemide y = 43.381x + 8.666 0.9992 2.5–150 0.13
Bumetanide y = 36.124x + 1.320 0.9999 2.5–150 0.20