Total CO2 or bicarbonate is different than the partial pressure of CO2 (PCO2). Learn about PCO2
At a Glance
Why Get Tested?
When to Get Tested?
During a routine physical or as recommended by your doctor if you are experiencing symptoms such as weakness, confusion, prolonged vomiting, or respiratory distress that could indicate an electrolyte imbalance or acidosis or alkalosis
A blood sample drawn from a vein in the arm
Test Preparation Needed?