Table 2. Intra- and inter-day (n=5) accuracy and precision of QC samples of sumatriptan in plasma.

Nominal Concentration (ng/mL)	Accuracy (%)		Precision (RSD, %)
	Intra-day	Inter-day	Intra-day	Inter-day
0.3 (LLOQ)	95.4	99.5	7.53	11.2
0.9 (LQC)	101.1	103.2	4.74	4.99
30 (MQC)	102.0	102.5	2.39	2.40
80 (HQC)	97.0	93.7	5.33	7.64

LQC, low quality control; MQC, middle quality control; HQC, high quality control.