Direct Measurement of Blood Oxygen Levels

The analyst performs direct measurement of O2 saturation in blood by a method other than pulse oximetry. The provider typically performs an ABG, arterial blood gas, using arterial blood inserted into a blood gas analyzer that can measure several parameters, including the amount of oxygen, O2. O2 saturation, also called sO2, is the percentage of blood carrying oxygen and clinicians can use the sO2 to determine whether the patient requires supplemental oxygen. Choose a location to see hospital-reported price summaries. This page does not show national, sample, or aggregate pricing.