Table 2.

Accuracy of CN and SCN in intestinal microbial enzyme solution and plasma (n = 6).

Analytes	Matrix
	Intestinal microbial enzyme solution			Plasma
	Concentration (μM)	Accuracy (%) (mean ± SD)	RSD (%)	Concentration (μM)	Accuracy (%) (mean ± SD)	RSD (%)
CN	5	90.20 ± 11.15	12.36	2	106.91 ± 5.78	5.40
	10	94.28 ± 9.9	10.49	10	109.55 ± 5.32	4.85
	50	112.59 ± 3.04	2.70	75	96.83 ± 14.21	14.67
	500	115.39 ± 3.05	2.65
SCN	5	104.80 ± 7.79	7.43	20	86.48 ± 4.39	5.07
	10	98.40 ± 2.22	2.26	100	101.01 ± 2.66	2.64
	50	100.59 ± 1.37	1.36	600	104.23 ± 4.87	4.67
	500	95.43 ± 2.73	2.86