Table 3.

Intra-day and Inter-day test (precision and accuracy measurement).

Compounds	Concentration (μg/mL)	Intra-Day (n = 3)			Inter-Day (n = 3)
		Mean ± SD	RSD (%)	Accuracy	Mean ± SD	RSD (%)	Accuracy
G-Re	25	23.41 ± 0.58	2.50	93.6	24.03 ± 0.22	0.92	96.1
	125	128.56 ± 2.92	2.27	102.8	126.88 ± 1.46	1.15	101.5
	250	252.11 ± 1.42	1.16	100.8	249.08 ± 0.29	0.12	99.6
	25	24.69 ± 0.58	2.37	98.8	25.06 ± 0.22	0.88	100.2
G-Ra8	125	136.61 ± 1.21	0.96	101.3	126.24 ± 1.46	1.16	101.0
	250	228.33 ± 1.20	0.52	91.3	224.16 ± 0.29	0.13	89.7
	25	27.43 ± 0.27	1.23	109.7	27.49 ± 0.07	0.24	110.0
G-Rf	125	127.33 ± 2.01	0.59	101.9	128.65 ± 0.76	0.56	102.9
	250	272.09 ± 4.75	1.75	108.8	265.50 ± 3.49	1.31	106.2

Photo diode array detector method for the determination of G-Re, G-Ra8, and G-Rf (n = 3). RSD, relative standard deviation.