Determination of Atenolol and Trimetazidine in Pharmaceutical Tablets and Human Urine Using a High Performance Liquid Chromatography-Photo Diode Array Detection Method

Table 5

Intra- and interday precision and accuracy calculated from quality control (QC) samples in human urine.

	Intra-day				Inter-day
	Mean (μg/mL)	SD	RSD	DFN	Mean (μg/mL)	SD	RSD	DFN
ATN
1.0	1.00	0.02	1.76	0.08	0.99	0.03	2.85	-0.01
10	9.92	0.07	0.73	-0.81	9.85	0.11	1.10	-1.50
20	20.02	0.25	1.26	0.11	20.08	0.17	0.82	0.41
TMZ
0.5	0.50	0.004	0.75	0.98	0.50	0.004	0.69	0.90
10	10.19	0.01	0.98	1.9	10.14	0.12	1.18	1.37
20	19.36	0.08	0.42	-3.19	19.41	0.08	0.42	-2.94