Quality by Design Approach for the Development and Validation of Glipizide, an Antidiabetic Drug, by RP-UPLC with Application to Formulated Forms and Urine

Table 9

Results of recovery study by standard addition method.

Tablet studied	GPZ µg mL^−1, tablet	GPZ µg mL^−1, pure	Total GPZ found, µg mL^−1	Percent recovery of pure GPZ,; (% GPZ ± SD)
Dibizide	49.21	50	100.23	101.03 ± 0.36
	49.21	150	199.93	100.36 ± 0.45
	49.21	250	301.87	100.89 ± 0.89
Glynase	48.67	50	99.89	101.24 ± 1.12
	48.67	150	201.23	101.29 ± 0.1.02
	48.67	250	302.23	101.19 ± 0.98