Table 3.

Intra- and inter-day validation parameters (n = 20). CV—coefficient of variation.

Analyte	Carbamazepine		Carbamazepine-10,11 epoxide
Quality Concentration	Intra-day (% CV)	Inter-day (% CV)	Accuracy (%)	Intra-day (% CV)	Inter-day (% CV)	Accuracy (%)
Low (30 ng/mL)	6.39	12.82	95.35	6.02	13.58	109.28
Medium (2000 ng/mL)	4.97	5.32	98.51	4.18	3.14	97.59
High (3750 ng/mL)	2.69	2.67	98.65	2.67	2.77	97.93

CV—coefficient of variation.