Rapid Determination of Ractopamine Residues in Edible Animal Products by Enzyme-Linked Immunosorbent Assay: Development and Investigation of Matrix Effects

Table 3

Recovery studies of 4 samples at 3 levels by ELISA.

Samples	Fortification level	Results (𝑛=3)
	(𝜇g/kg)	Mean ± S.D. (𝜇g/kg^-1)	Recovery (%)	CV (%)
Chicken muscle	0.5	0.37±0.03	73.33	8.33
	2.0	1.41±0.14	70.33	9.68
	8.0	6.43±0.06	80.42	0.89
Pig muscle	0.5	0.38±0.04	76.73	10.23
	2.0	1.41±0.11	70.60	7.66
	8.0	5.7±0.26	71.25	4.64
Pig liver	1.0	0.68±0.06	67.67	9.50
	2.0	1.33±0.15	66.67	11.36
	5.0	3.07±0.20	61.33	6.59
Pettitoes	0.5	0.41±0.03	81.33	8.19
	2.0	1.55±0.08	77.33	5.22
	8.0	6.13±0.45	76.67	7.42