Determination of Morphine in Human Urine by the Novel Competitive Fluorescence Immunoassay

Table 3

Cross reactivity of MOR structurally similar compounds.

Coexisting substance	Molecule structure	CR rate (%)
MOR		100
6-Acetylmorphine		8.8
3-Acetylmorphine		7.9
Codeine		1.6
Heroine		<0.05
Cocaine		<0.05
Ketamine		<0.05
Ephedrine		<0.05