Journal of Korean Medicine for Obesity Research

Table. 4. Table 4

Analytical Results of Intra- and Inter-day Test

Components	Concentration (μg/mL)	Intra-day				Inter-day

		Mean	SD	RSD (%)	Accuracy (%)	Mean	SD	RSD (%)	Accuracy (%)
Norephedrine	12.5	12.66	0.06	0.48	98.73	12.65	0.04	0.31	98.82
	50	50.46	0.26	0.51	99.08	50.37	0.14	0.28	99.27
	80	80.60	0.30	0.38	99.25	80.86	0.84	1.04	98.93
Ephedrine	12.5	12.68	0.15	1.19	98.60	12.62	0.12	0.94	99.03
	50	50.41	0.32	0.64	99.19	50.31	0.14	0.27	99.38
	80	80.61	0.41	0.51	99.24	80.80	0.74	0.91	99.01
Pseudoephedrine	12.5	12.73	0.17	1.30	98.18	12.63	0.14	1.09	99.00
	50	50.66	0.34	0.67	98.70	50.48	0.21	0.41	99.05
	80	80.85	0.49	0.61	98.95	80.95	0.77	0.95	98.82
Methylephedrine	12.5	12.73	0.04	0.31	98.20	12.71	0.05	0.41	98.33
	50	50.41	0.34	0.68	99.20	50.31	0.14	0.29	99.38
	80	80.69	0.41	0.51	99.15	80.85	0.76	0.94	98.95

SD: standard deviation, RSD: relative standard deviation.