UnderstandingOxygenLevels

Health

Understanding Normal Oxygen Levels

Measuring Oxygen Levels: Understanding SpO2 and PaO2 To understand normal oxygen levels, it’s important to know how oxygen levels are measured in the body. Two common methods for measuring oxygen levels are through pulse oximetry (SpO2) and arterial blood gas (PaO2) tests. SpO2 is a non-invasive test that measures the percentage of oxygen-saturated hemoglobin in the blood. It is often…