Table 3.

Validation results of recovery and matrix effects.

Compound	Nominal conc. (ng/mL)	Recovery (%)	Matrix effect%
Amlodipine	15	102.69	2.32
	150	100.75	−8.53
	1500	92.08	3.11
Atenolol	25	95.96	5.81
	250	103.29	−3.46
	2500	104.72	4.54
Atorvastatin	1	106.50	1.68
	10	103.46	3.39
	100	99.42	2.66
Digoxin	10	98.08	0.78
	100	97.61	5.71
	1000	91.04	0.58
Enalapril	0.5	106.54	0.41
	5	90.07	−0.85
	50	96.13	3.20
Fenofibrate	15	103.49	1.16
	150	103.03	−4.35
	1500	100.54	−4.33
Furosemide	100	85.63	6.47
	1000	98.92	2.31
	10000	92.01	−2.62
Losartan	10	104.38	2.75
	100	97.56	−1.43
	1000	92.45	7.13
Nifedipine	25	88.91	2.83
	250	94.19	3.90
	2500	87.99	1.26
Propranolol	1	93.68	3.16
	10	91.56	−7.05
	100	92.99	−3.21
Simvastatin	25	102.17	3.18
	250	102.36	−0.84
	2500	90.44	1.61
Valsartan	50	87.20	2.04
	500	91.54	−1.99
	5000	85.46	4.23