Table 3.

Analytical accuracy and precision of RES in samples.

Analyte	Added concentration	Intra-day (n = 6), Accuracy (%)	Precision (RSD, %)	Inter-day (n = 6), Accuracy (%)	Precision (RSD, %)
Plasma (ng/mL)	20	99.34	4.67	95.37	4.68
	500	98.46	6.28	97.64	7.65
	1000	93.25	9.86	98.75	7.36
Heart (ng/g)	50	101.54	6.36	101.24	4.85
	1000	105.46	4.97	96.49	8.67
	2000	99.27	8.36	103.34	5.76
Liver (ng/g)	50	106.63	9.27	96.82	10.64
	1000	102.74	4.63	94.26	7.35
	2000	101.39	7.68	98.25	6.43
Spleen (ng/g)	50	97.37	10.85	99.45	9.63
	1000	98.47	7.35	95.41	3.76
	2000	109.27	5.75	98.58	7.75
Lung (ng/g)	50	98.73	6.39	102.46	8.36
	1000	96.58	11.37	103.27	5.86
	2000	95.93	9.72	95.24	7.32
Kidney (ng/g)	50	104.88	4.27	102.47	9.53
	1000	102.57	8.19	104.12	6.32
	2000	96.64	3.67	99.45	4.86
Brain (ng/g)	50	96.49	6.85	95.75	10.75
	1000	104.53	9.38	96.26	7.48
	2000	103.37	8.64	97.54	5.74