title: Determination of ammonia in urine with an ammonium electrode and with a direct method.
mesh_terms: D000641:Ammonia / Q000652:urine*; D004566:Electrodes; D005069:Evaluation Studies as Topic; D006801:Humans; D006863:Hydrogen-Ion Concentration; D008722:Methods; D008832:Microchemistry; D010783:Photometry; D011188:Potassium / Q000652:urine
chemical_list: D000641:Ammonia; D011188:Potassium