Normal values will vary from lab to lab. They are also dependent on elevation above sea level as a person’s blood oxygen level will be lower if he or she lives higher than sea level.
Results from an arterial blood gas analysis are not diagnostic; they should be used in combination with the results of other tests and exams to evaluate someone for a respiratory, metabolic, or kidney problem.
A low partial pressure of oxygen (PaO2) suggests that a person is not getting enough oxygen, while results that are within normal range usually mean that oxygen intake is enough.
All other components of the blood gas analysis (pH, PaCO2, HCO3-) are interrelated and the results must be considered together. Certain combinations of results, if abnormal, may indicate a condition that is causing acidosis or alkalosis.
Keywords: Arterial Blood Gas Analysis; Arterial Blood Gases; Blood Gases; ABGs