The two primary methods to measure this are: Pulse Oximetry : A non-invasive device clips onto a finger to measure oxygen saturation ( SpO2). Normal range : 95-100%. Arterial Blood Gas (ABG) Test: A blood sample taken from an artery provides detailed insights, including oxygen levels (PaO2), carbon dioxide levels, and blood pH. Test Results ... Learn about blood oxygen levels, their importance, normal oxygen saturation by age, pulse oximeter readings chart, and healthy saturation normal range . What is the Spo2 normal range by age chart? Measurements of arterial oxygen content in the blood reveal the amount of oxygen in the bloodstream at any time. Pulse oximetry is a noninvasive, painless test that measures the oxygen saturation level of your blood. Here’s how it works and what the readings mean.
