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Bicarbonate (CO₂)

Bicarbonate, often listed as CO₂ or total CO₂ on lab reports, is the main buffer that keeps your blood from becoming too acidic or too alkaline.

Reference range
21–31 mmol/L
Direction
A range, not a direction
01

Your reading

This app uses 21–31 mmol/L. A low value means the blood is leaning acidic, which can come with kidney issues, severe diarrhea, uncontrolled diabetes or very intense exercise. A high value can follow vomiting, diuretics, or lung conditions that hold on to carbon dioxide.

02

What may help

  • —Retesting at rest if you trained hard right before the blood draw
  • —Staying hydrated, especially during illness
03

When to talk to a doctor

If it's outside the range on a repeat test, or comes with fast breathing, confusion or high blood sugar.

04

Common questions

What is Bicarbonate?

Bicarbonate, often listed as CO₂ or total CO₂ on lab reports, is the main buffer that keeps your blood from becoming too acidic or too alkaline.

What is a normal Bicarbonate level?

Daygo uses 21–31 mmol/L as the reference range. This app uses 21–31 mmol/L. A low value means the blood is leaning acidic, which can come with kidney issues, severe diarrhea, uncontrolled diabetes or very intense exercise. A high value can follow vomiting, diuretics, or lung conditions that hold on to carbon dioxide.

How can I improve my Bicarbonate?

Retesting at rest if you trained hard right before the blood draw. Staying hydrated, especially during illness.

When should I see a doctor about Bicarbonate?

If it's outside the range on a repeat test, or comes with fast breathing, confusion or high blood sugar.

Source: MedlinePlus (NIH): Basic Metabolic Panel. Reference ranges are standard adult intervals — your own lab may report a different range for your age, sex, or method. This isn't medical advice; always go by the range on your actual results and talk to a clinician about anything that concerns you.