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

Table 6

RSD of the drugs on different days and different analysts.

Retention time % RSD		Areas % RSD	Sample area % RSD
Day 1—Analyst 1
Glimepiride	0.03	0.1	0.04
Pioglitazone	0.08	0.1	0.04
Metformin	0.03	0.01	0.02
Day 2—Analyst 2
Glimepiride	0.04	0.04	0.05
Pioglitazone	0.06	0.01	0.03
Metformin	0.08	0.1	0.06