Analytical Method Validation of Gamijakyakgamchobuja-Tang (KCHO-1, Mecasin) Preparation

Table 11

Accuracy and precision of QC sample.

(a) Curcumin

Concentration of total catechins (μg/mL)	Measured concentration (μg/mL)			Mean (μg/mL)	SD	CV (%)	Accuracy (%)
	No.1	No.2	No.3
50	50.66	51.07	50.93	50.89	0.21	0.41	101.78

(b) Glycyrrhizic Acid

Concentration of total catechins (μg/mL)	Measured concentration (μg/mL)			Mean (μg/mL)	SD	CV (%)	Accuracy (%)
	No.1	No.2	No.3
250	251.68	253.84	253.55	253.02	1.17	0.46	101.21

(c) Salvianolic Acid B

Concentration of total catechins (μg/mL)	Measured concentration (μg/mL)			Mean (μg/mL)	SD	CV (%)	Accuracy (%)
	No.1	No.2	No.3
250	242.70	242.95	241.21	242.29	0.94	0.39	96.92