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What can cause a low carbon dioxide level in a blood test?

1 doctor weighed in
Dr. Matt Wachsman
Internal Medicine

In brief: Loss or acidosis

Loss of carbon dioxide (as carbon dioxide) can occur in anything that makes you breathe heavily for a long period of time.
(being on a ventilator as one example). Loss through the kidney with diuretics sometime. Mostly, CO2 is in the form of bicarbonate (sodium bicarbonate). This is removed by acidity which occurs in serious organ failure (sepsis, kidney failure, etc.)

In brief: Loss or acidosis

Loss of carbon dioxide (as carbon dioxide) can occur in anything that makes you breathe heavily for a long period of time.
(being on a ventilator as one example). Loss through the kidney with diuretics sometime. Mostly, CO2 is in the form of bicarbonate (sodium bicarbonate). This is removed by acidity which occurs in serious organ failure (sepsis, kidney failure, etc.)
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