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Blood gases test

Overview Risks Results

Blood gases

Alternative Names: Arterial blood gas analysis; ABG Normal Values: Values at sea level: Partial pressure of oxygen (PaO2) - 75 - 100 mm Hg Partial pressure of carbon dioxide (PaCO2) - 35 - 45 mm Hg A pH of 7.35 - 7.45 Oxygen saturation (SaO2) - 94 - 100% Bicarbonate - (HCO3) - 22 - 26 mEq/liter Text Continues Below Note: mEq/liter = milliequivalents per liter; mm Hg = millimeters of mercury At altitudes of 3,000 feet and above, the values for oxygen are lower. What abnormal results mean: Abnormal results may indicate respiratory, metabolic, or renal diseases. The results may also be abnormal in trauma, particularly with head or neck injuries that may affect breathing.

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