Stability Indicating HPLC Determination of Risperidone in Bulk Drug and Pharmaceutical Formulations

Table 1

Precision study.

Drug	Concentration (𝜇g/mL)	Intraday precision Calculated concentration ± S.D. (𝜇gmL^−1), R.S.D.	Interday precision calculated concentration ± S.D. (𝜇gmL^−1), R.S.D.
Risperidone	20	19.88±0.20, 1.04	20.04±0.24, 1.22
	30	29.85±0.26, 0.89	29.82±0.26, 0.88
	40	39.92±0.21, 0.52	39.87±0.27, 0.68