Development of Sensitive and Specific Analysis of Vildagliptin in Pharmaceutical Formulation by Gas Chromatography-Mass Spectrometry

Table 3

Intra- and interday precision and accuracy results for VIL ().

Nominal amount (ng mL^−1)	Interday			Intraday
	± SE	Precision (%)	Accuracy (%)	± SE	Precision (%)	Accuracy (%)
15	15.31 ± 0.19	3.62	2.06	15.2 ± 0.22	3.04	1.33
150	150.7 ± 1.68	2.73	0.46	151.16 ± 1.49	2.41	0.77
250	249.3 ± 1.87	1.84	−0.26	251.01 ± 1.20	1.17	0.40

  ± SE: mean ± standard error.
Percent relative standard deviation.
Bias: [(found − added)/added] × 100.