The normal reference value for blood gas analysis PH is 7.35-7.45, greater than 7.45 for loss of compensatory alkalosis and less than 7.35 for loss of compensatory acidosis. The partial pressure of carbon dioxide is the pressure generated by the physically dissolved carbon dioxide molecules in the blood is normal, averaging 35-45 mmHg. actual bicarbonate and standard bicarbonate, normal values are 22-27 mmol/L. total carbon dioxide is normal, reference values are 24-32 mmol/L, buffer base is normal, values are 45-55 mmol/L. residual base normal values are -2.3 to 2.3mmol/L. The normal reference value of partial pressure of oxygen is 75-100mmHg, the normal reference value of oxygen content is 7.6-10.3mmol/L, and the normal reference value of oxygen saturation is 95%-98%. The normal reference value of oxygen partial pressure at 50% oxygen saturation is 3.19-3.72 kpa, and the normal reference value of carbon dioxide binding capacity is 22-31 mmol/L.