Medical Definition of blood gas
: dissolved carbon dioxide and oxygen in blood typically expressed in terms of partial pressure
also
: a test of usually arterial blood to measure the partial pressures and concentrations of carbon dioxide and oxygen along with the pH and bicarbonate level
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“Blood gas.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/blood%20gas. Accessed 25 Feb. 2021.
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