How are results of arterial blood gases (ABGs) expressed?

Updated: May 14, 2020
  • Author: Kevin McCarthy, RPFT; Chief Editor: Nader Kamangar, MD, FACP, FCCP, FCCM  more...
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See the list below:

  • Measured: pH, PaCO2 (mm Hg or kPa), PaO2 (mm Hg or kPa), and, if hemoximetry is performed, total hemoglobin (tHb, g/dL), oxyhemoglobin (O2 Hb [%]), and metHb (%)

  • Calculated: Total bicarbonate (HCO3 [mEq/L]), base excess or deficit (mEq/L), oxygen content (CO2 [mL] O2/dL or volume%)

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