Table 2.

The mean exaction recovery and matrix effects of Nuc (n = 6)

Conc. (ng mL−1)	Recovery (%)		Matrix factor (%)		IS-normalized matrix factor (%)
	Mean ± SD	%CV	Mean ± SD	%CV	Mean ± SD	%CV
5	95.27 ± 8.28	8.29	101.43 ± 12.15	11.98	95.60 ± 12.51	13.09
10	89.96 ± 11.55	12.84	99.91 ± 7.91	7.92	109.60 ± 9.56	8.72
100	77.47 ± 2.28	2.95	71.18 ± 2.43	3.41	94.30 ± 6.16	6.53
800	81.5 ± 8.3	10.19	98.94 ± 10.28	10.39	107.20 ± 13.95	13.02