Item Amlodipine Besylate Atorvastatin Calcium
Linear range (μg/ml) 5.18-15.54 5.26-15.78
Detection limit (μg/ml) 0.16 0.17 
Quantitation limit (μg/.ml) 0.48 0.52
Regression data - -
No. 5 5
slope (b) 44667 41443    
Standard deviation of the slope 115.01 157.99
intercept (a) -405.02 -2251.4
Standard deviation of the intercept 2163.61 2152.91
correlation coefficient® 0.9999 0.9999
Standard error of regression 2407.38 1819.8
(Y=a+bC, where C is the concentration of the compound (μg/ml) and Y is the drug peak area)
Table 2: Calibration data was resulted from method validation of Amlodipine Besylate and Atorvastatin Calcium respectively.