hco3 is regulated by what
HCO3 Nephrology A general term for any salt containing the anion HCO3â, which is the most important buffer in the blood; bicarbonate is regulated by the kidney, which excretes it in excess and retains it when needed; it is â in ingestion of excess antiacids, diuretics, steroids; it is â in diarrhea, liver disease, renal disease, chemical poisoning.