title: Letter: Boric acid interference with alumina extraction of urinary catecholamines.
mesh_terms: D000535:Aluminum; D001881:Borates; D002395:Catecholamines / Q000652:urine*; D002614:Chelating Agents; D002845:Chromatography; D004209:Disposable Equipment; D005069:Evaluation Studies as Topic; D006801:Humans; D007202:Indicators and Reagents; D008722:Methods; D013997:Time Factors
chemical_list: D001881:Borates; D002395:Catecholamines; D002614:Chelating Agents; D007202:Indicators and Reagents; D000535:Aluminum