The formula for the Radiometer ABL-3 is:
corrected pO2 =
= (measured pO2) * (10 ^ ((((0.0252) / ((0.243 * (((measured oxygen) / 100) ^3.88))+1))+0.00564) * ((patient temperature in °C) -37)))
The formula for the Corning blood gas instruments is:
corrected pO2 =
= (measured pO2) * (10^ ((0.0052+((0.027) * (1-(10^((-0.13) * (100 - (oxygen saturation))))))) * ((patient temperature in °C) -37)))
The formula for the Instrumentation Laboratory (IL) models 1301 and 1303 is:
corrected pO2 =
= (measured pO2) * (10^((((5.49*(10^(-11)) * ((measured oxygen) ^ (3.88))) +0.071) / ((9.72 * (10^(-9)) * (measured oxygen) ^3.88))+2.3)) * ((patient temperature in °C) - 37)))
The formula for the IL model 813 if oxygen saturation <= 95%:
corrected pO2 =
= (measured pO2) * (10^ (0.031 * ((patient temperature in °C) -37))))
The formula for the IL model 813 if oxygen saturation > 95%:
corrected pO2 =
= (measured pO2) * (10^((0.032-(0.0268 * (EXP((0.3 * (oxygen saturation))-30)))) * ((patient temperature in °C) -37)))))
A formula proposed by Siggaard-Andersen et al is:
corrected pO2 =
= (measured pO2) * (EXP((((0.012 * ((measured pO2) / 714)) + (((oxygen saturation) / 100) * (1 - ((oxygen saturation) / 100)) * ((hemoglobin in g/dL) / 0.6) * 0.073)) / (((measured pO2) / 714) + (((oxygen saturation)/100) * (1 - ((oxygen saturation) / 100)) * ((hemoglobin in g/dL) / 0.6)))) * ((patient temperature in °C)-37)))
