Table: Blood-Gas Reference Ranges - Merck Veterinary Manual

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Blood-Gas Reference Ranges

Blood-Gas Reference Ranges

Measure	Units	Dog	Cat	Cow	Horse
In Conventional (USA) Units
pH		7.31–7.42	7.24–7.40	7.35–7.50	7.32–7.44
HCO₃	mEq/L	17–24	17–24	20–30	24–30
pCO₂	mmHg	29–42	29–42	35–44	36–46
pO₂	mmHg	85–95	85–95	92	94
In SI Units
HCO₃	µmol/L	17–24	17–24	20–30	24–30
pCO₂	kPa	3.86–5.60	3.86–5.60	2.67–3.99	4.67–6.13
pO₂	kPa	11.3–12.66	11.3–12.66	12.26	12.53