TABLE 5.

The results of accuracy and precision.

Component	Concentration (ng/ml)	Intra-day precision		Inter-day precision		Accuracy
		Mean (ng/ml)	RSD (%)	Mean (ng/ml)	RSD (%)	Mean (ng/ml)	RE (%)	RSD (%)
TSG	14,825.00	14,876.26	4.1	15,023.17	4.2	15,981.35	7.8	2.3
	741.25	740.84	6.6	747.81	6.9	730.87	-1.4	4.1
	14.83	13.69	6.2	12.23	3.1	17.23	16.2	3.2
Emodin	38,375.00	38,406.12	6.9	37,697.78	6.3	19,590.44	2.1	5.9
	767.50	773.6	3.5	783.09	1.1	745.24	−2.9	7.7
	15.28	14.02	6.8	13.94	7.9	16.96	11.0	7.3
Aloe-emodin	2,900.00	3,012.06	9.3	2,987.48	3.6	2,876.80	−0.8	12.9
	362.50	356.72	4.1	325.67	2.2	362.14	−0.1	2.7
	12.79	11.64	6.3	10.44	11.1	12.78	−0.1	2.0
Physcion	6,550.00	6,618.43	3.3	6,667.23	2.9	7,015.05	7.1	4.2
	409.38	419.55	10.9	431.57	10.4	468.33	14.4	6.2
	12.79	13.65	13.2	10.49	14.3	13.35	4.4	1.5
E-glu	6,350.00	6,354.33	2.0	6,025.67	1.3	6,464.30	1.8	4.6
	396.88	396.16	4.2	405.48	4.3	359.97	−9.3	3.7
	12.40	11.22	5.5	12.19	6.1	13.22	6.6	2.8
P-glu	1,233.30	1,227.31	2.1	1,373.63	2.0	1,139.57	−7.6	3.3
	205.50	208.37	5.1	208.73	7.4	212.28	3.3	5.2
	12.84	12.42	3.9	12.92	2.9	13.69	6.6	13.9
Gallic acid	1,280.00	1,272.00	3.2	1,351.00	8.1	1,154.56	−9.8	10.2
	213.32	217.25	6.1	228.94	5.3	220.79	3.5	6.3
	13.32	15.64	5.1	12.82	6.8	14.47	8.6	2.6
Catechin	4,750.00	4,707.67	6.4	4,450.67	4.7	4,617.00	−2.8	5.3
	296.87	287.48	8.6	278.82	3.4	299.24	0.8	11.6
	18.56	18.06	3.4	17.9	8.9	20.94	12.8	8.4
Resveratrol	8,600.00	8,584.83	2.9	8,545.67	2.3	9,571.80	10.9	6.0
	537.50	550.09	2.6	569.86	1.7	539.65	−3.0	6.5
	16.78	17.50	5.8	17.00	6.7	15.49	−3.6	5.7