title: A comparison of methods for measuring urinary ammonium.
mesh_terms: D000641:Ammonia / Q000652:urine*; D004058:Diffusion; D004566:Electrodes; D005557:Formaldehyde; D006801:Humans; D007202:Indicators and Reagents; D008722:Methods; D013997:Time Factors
chemical_list: D007202:Indicators and Reagents; D005557:Formaldehyde; D000641:Ammonia