title: A simplified one-stage cation exchange technique for the determination of whole blood ammonium.
mesh_terms: D006801:Humans; D006863:Hydrogen-Ion Concentration; D007475:Ion Exchange Resins; D008722:Methods; D000644:Quaternary Ammonium Compounds / Q000097:blood*; D013997:Time Factors
chemical_list: D007475:Ion Exchange Resins; D000644:Quaternary Ammonium Compounds