Carbon Dioxide

What This Marker Means

CO₂ reflects the body’s acid–base balance and respiratory compensation. Low CO₂ can indicate metabolic acidosis, dehydration, or poor nutritional intake. High CO₂ can reflect respiratory retention or metabolic alkalosis.

How Alcohol Affects This Marker

Alcohol metabolism produces acidic byproducts that can slightly lower CO₂. Dehydration or vomiting after heavy drinking may also shift acid–base balance.

How to Discuss With Your Doctor

Ask whether your CO₂ level suggests dehydration, metabolic stress, or acid–base imbalance. Share information about recent drinking or poor food intake.