pH is a scale used to determine how acidic or basic a substance is. Our bodies work very closely to control the pH of our blood and other body fluids. Maintaining a balanced pH is essential to good health.

Blood gas is an extremely important test in the field of emergency resuscitation, blood will be analyzed to assess respiratory status, metabolic status, and other parameters (such as sodium, potassium, calcium, blood lactate).

Arterial blood gas analysis includes measurements of the pH, partial pressures of oxygen, and carbon dioxide in arterial blood. The test results are used to assess the acid-base balance of the blood and the ability of the lungs to exchange gases.