Carbon Dioxide Content
(CO2 )

Alternate Names

  • CO2 Content
  • CO2 Combining Power

Carbon dioxide is a waste product from the use of oxygen for normal body function. Levels of carbon dioxide in the blood are used to determine blood pH levels, and to evaluate electrolyte status. Carbon dioxide content is performed along with other electrolyte tests: chloride, potassium, and sodium. The level can be used as an indirect way of measuring bicarbonate level to determine acid/base balance of your blood and as an indication of how well your lungs are working. Bicarbonate levels are regulated by the kidneys, and high levels are used to diagnose kidney failure. Altered blood levels of carbon dioxide are also seen in people with severe diarrhea and vomiting, emphysema, shock, and salicylate (aspirin) poisoning. Carbon dioxide content by itself is not very useful, and there are many medications can cause changes in blood carbon dioxide levels.


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