Table 2.

Intra- and interday precision and accuracy for QC samples (n = 5).

Aanlyte	Added (μg/mL)	Interday			Intraday
		Found (μg/mL)	RSD (%)	Accuracy (%)	Found (μg/mL)	RSD (%)	Accuracy (%)
DSS	8.10	7.88 ± 0.41	5.18	97.5	8.08 ± 0.46	5.75	99.9
	1.62	1.61 ± 0.07	4.43	100.1	1.61 ± 0.09	5.90	99.0
	0.324	0.328 ± 0.02	6.44	101.2	0.325 ± 0.03	7.73	100.4
HP	7.50	7.65 ± 0.33	4.25	102.0	7.82 ± 0.16	2.02	104.2
	1.50	1.52 ± 0.08	5.05	101.2	1.51 ± 0.08	5.45	100.5
	0.300	0.307 ± 0.02	6.16	102.4	0.315 ± 0.01	4.52	104.9
RA	7.55	7.67 ± 0.29	3.78	101.5	7.90 ± 0.10	1.26	102.7
	1.51	1.49 ± 0.07	4.44	98.8	1.51 ± 0.07	4.76	100.3
	0.302	0.307 ± 0.02	5.62	101.6	0.299 ± 0.02	6.57	99.2
LA	17.6	17.8 ± 0.65	3.64	101.1	17.7 ± 0.69	3.91	100.7
	3.52	3.58 ± 0.15	4.10	101.8	3.57 ± 0.12	3.41	101.7
	0.879	0.865 ± 0.04	4.58	98.4	0.885 ± 0.03	3.80	100.7
SAB	18.7	18.5 ± 0.78	4.19	98.9	18.9 ± 0.72	3.79	101.0
	3.74	3.64 ± 0.14	3.81	97.3	3.65 ± 0.16	4.32	97.5
	0.935	0.932 ± 0.05	4.92	99.7	0.927 ± 0.07	7.40	99.2