Table 3.

The stability of the QC samples under four different conditions (n = 3).

Compounds	Spiked (ng·mL−1)	Stability (RSD%)
		25 °C/24 h	4 °C/24 h	4 °C/48 h	−20 °C/7d
AML	5	1.52	1.44	2.69	6.33
	20	2.30	1.61	0.95	0.69
	80	1.50	0.48	1.62	3.36
FEL	50	6.11	2.13	4.77	5.38
	200	1.96	3.19	7.00	4.72
	800	5.47	0.85	2.45	9.41
NIF	2.5	2.16	1.43	1.64	2.34
	10	7.42	0.57	0.92	1.23
	40	0.91	1.26	0.37	4.53
NIM	5	4.95	1.70	5.58	2.93
	20	3.02	1.20	2.40	4.50
	80	0.50	5.41	3.27	7.60
NIT	15	2.16	1.70	1.55	8.08
	60	10.05	1.06	6.42	2.02
	240	2.50	3.64	2.75	9.10