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What does a low CO2 level in a bicarbonate blood test mean?

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A low CO2 level can be a sign of several conditions, including:

  • Kidney disease
  • Diabetic ketoacidosis, which happens when your body’s blood acid level goes up because it doesn’t have enough insulin to digest sugars
  • Metabolic acidosis, which means your body makes too much acid
  • Addison’s disease, a rare condition that affects the hormone-producing adrenal glands
  • Ethylene glycol poisoning. This sweet-tasting chemical is in antifreeze, detergents, paints, and other household products.
  • Aspirin overdose

From: What Is a Bicarbonate Blood Test? WebMD Medical Reference

SOURCES:

University of Rochester Medical Center: “Bicarbonate.”

Scripps Health: “CO2 Blood Test.”

Lab Tests Online: “Bicarbonate.”

National Heart, Lung and Blood Institute: “Types of blood tests.”

University of California San Francisco Medical Center: “CO2”

The Mayo Clinic: “Diabetic ketoacidosis,” “Emphysema.”

The University of Tennessee Medical Center: “Ethylene glycol poisoning.”

Reviewed by Nayana Ambardekar on January 28, 2018

SOURCES:

University of Rochester Medical Center: “Bicarbonate.”

Scripps Health: “CO2 Blood Test.”

Lab Tests Online: “Bicarbonate.”

National Heart, Lung and Blood Institute: “Types of blood tests.”

University of California San Francisco Medical Center: “CO2”

The Mayo Clinic: “Diabetic ketoacidosis,” “Emphysema.”

The University of Tennessee Medical Center: “Ethylene glycol poisoning.”

Reviewed by Nayana Ambardekar on January 28, 2018

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