title: Spot tests used for systemic identification of drugs of abuse: a response.
mesh_terms: D002626:Chemistry, Pharmaceutical; D006801:Humans; D007202:Indicators and Reagents; D004364:Pharmaceutical Preparations / Q000032:analysis*; D019966:Substance-Related Disorders
chemical_list: D007202:Indicators and Reagents; D004364:Pharmaceutical Preparations