Ultraviolet Spectrophotometric Method for Determination of Glipizide in Presence of Liposomal/Proliposomal Turbidity

Table 4

Recovery of the proposed method (standard addition method, 𝑛=6).

Dosage forms	Concentration taken,; 𝐶𝑠 (𝜇g/mL)	Concentration added,; 𝐶𝑎 (𝜇g/mL)	Proposed method %Recovery^a,b ± %RSD
Pure GLIP	10	—	100.24±0.40
		8	101.08±0.62
		10	99.18±0.51
		12	99.02±0.53
Proliposomes of GLIP	10	—	100.39±0.39
		8	101.00±0.64
		10	99.39±0.68
		12	99.11±0.55

aAverage of six determinations.
^b%recovery = [(𝐶_𝑡−𝐶_𝑠)/𝐶_𝑎]×100, where 𝐶_𝑡: total concentration, 𝐶_𝑠: concentration taken, and 𝐶_𝑎: concentration added.