title: Interference by NaCl with the EMIT method of analysis for drugs of abuse.
mesh_terms: D002855:Chromatography, Thin Layer; D005188:False Negative Reactions; D006801:Humans; D007124:Immunoenzyme Techniques; D008691:Methadone / Q000652:urine*; D009020:Morphine / Q000652:urine; D012965:Sodium Chloride / Q000652:urine*; D019966:Substance-Related Disorders / Q000652:urine*
chemical_list: D012965:Sodium Chloride; D009020:Morphine; D008691:Methadone