What is the Bicarbonate (HCO₃⁻) / eCO₂ Test?

The Bicarbonate (HCO₃⁻) / eCO₂ Test measures the level of bicarbonate, an important electrolyte responsible for maintaining the body’s acid-base (pH) balance. It is commonly included in electrolyte panels and helps evaluate disorders related to the kidneys, lungs, and metabolism.

Who should take this test?

• Patients with suspected acid-base imbalance.
• Individuals with kidney or lung diseases.
• People with electrolyte imbalance.
• Patients with symptoms like breathing difficulty, fatigue, or confusion.
• Doctor-advised monitoring of metabolic or respiratory disorders.

Preparation & Test Process

How to interpret results

The test reports the level of bicarbonate (HCO₃⁻) or total CO₂.

High levels may indicate metabolic alkalosis or compensation for respiratory disorders.
Low levels may suggest metabolic acidosis, kidney dysfunction, or severe dehydration.

Results should always be interpreted with other electrolytes, ABG reports, and clinical findings.

FAQs – Bicarbonate (HCO₃⁻) / eCO₂ Test