A bicarbonate test, also known as a CO2 test, is used to detect electrolyte imbalances or changes in blood acidity (pH).
It's usually part of a series of tests that are used to investigate the kidney (renal profile).
A bicarbonate test may be carried out as part of
a routine physical examination or it may be recommended if you're experiencing symptoms such as:
These symptoms could be the result of an electrolyte imbalance, or acidosis or alkalosis (where the acid or alkaline levels in the body's fluids and tissues are abnormally high).