RP-HPLC Analytical Method Development and Validation for Simultaneous Estimation of Three Drugs: Glimepiride, Pioglitazone, and Metformin and Its Pharmaceutical Dosage Forms

Table 4

Method precision results.

	Assay 1	Assay 2	Assay 3	Assay 4	Assay 5	Assay 6	Average	% RSD
Glimepiride	99.55%	99.05%	99.21%	99.15%	99.21%	99.72%	99.31%	0.21
Pioglitazone	99.37%	99.44%	99.31%	99.54%	99.41%	99.26%	99.38%	0.099
Metformin	99.20%	98.95%	98.65%	99.63%	98.85%	99.05%	99.06%	0.34