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A salt containing the anion HCO3-, which is the most important buffer in the blood, it is regulated by the kidney, which excretes it in excess and retains it when needed; it increases with ingestion of excess anti-acids, diuretics and steroids; it is decreased with diarrhoea, liver disease, renal disease and chemical poisoning.

Bicarbonate is usually measured in serum as total CO2.
Ref range
24–26 Meq/L.


Bicarbonate, see there.
References in periodicals archive ?
wells HCo3 meq /1 C1 meq /1 No3-Nmg/1 So4-S mg/1 B mg/1 Abdia 7.
Data about water including pH, EC, Cl, CO3, SO4, HCO3, K, Na, Mg, Ca, SAR and TDS in hydrometric stations related to the 2005 year were collected.
Therefore, these two factors was determined as input and each water quality parameters of Zayanderood river (includes: pH, EC, Cl, CO3, SO4, HCO3, K, Na, Mg, Ca, SAR, TDS and discharge) were considered as output.
Considering the plot radial diagrams pertaining to the year 2007, the type of water in Stations 1 to 4 is Ca and HCO3.
Despite the increase in the amount of solutions, the dominant type in Stations 5, 6, and 7 remains to be Ca and HCO3.
Of course, when AT is reached and the body goes into anaerobic metabolism, the increased lactate causes a shift in pH, which in turn causes the release of CO2 that was stored in buffered HCO3.