title: Free radical assay technique for drugs (application to opiate analysis).
mesh_terms: D000818:Animals; D000918:Antibody Specificity; D004578:Electron Spin Resonance Spectroscopy; D005609:Free Radicals / Q000032:analysis; D006801:Humans; D007106:Immune Sera; D007118:Immunoassay; D008722:Methods; D009020:Morphine / Q000032:analysis* / Q000652:urine; D009294:Narcotics / Q000032:analysis* / Q000652:urine; D011817:Rabbits / Q000276:immunology
chemical_list: D005609:Free Radicals; D007106:Immune Sera; D009294:Narcotics; D009020:Morphine