Stability-Indicating HPTLC Method for Determination of Duloxetine Hydrochloride in Bulk Drug and Tablet Formulation

Table 1

Linear regression data (ng per spot) for the calibration curves^a.

Linearity range	𝑟±SD	Slope ± SD	Confidence limit of slope^b	Intercept ± S.D.	Confidence limit of intercept^b
600–2000	0.9962±0.0015	121.54±0.61	120.98–122.08	987.31±6.17	982.14– 992.92

^a𝑛=3, ^b95% confidence limit.