title: Improvements to drug screening with XAD-2 resin columns.
mesh_terms: D002852:Chromatography, Ion Exchange; D006801:Humans; D007475:Ion Exchange Resins; D008722:Methods; D009093:Mucus / Q000032:analysis; D004364:Pharmaceutical Preparations / Q000652:urine; D014116:Toxicology
chemical_list: D007475:Ion Exchange Resins; D004364:Pharmaceutical Preparations