Assessing a patient's hydration status.
D001769:Blood; D001806:Blood Urea Nitrogen; D001826:Body Fluids; D006400:Hematocrit; D006801:Humans; D009730:Nursing Assessment; D009732:Nursing Care; D009994:Osmolar Concentration; D012964:Sodium / Q000097:blood; D014556:Urine; D014882:Water-Electrolyte Balance
D012964:Sodium