Health Dictionary
Reliable, easy-to-read patient information on common medical conditions — written in plain language, free of jargon, and grounded in current evidence. Browse the most frequent diagnoses, understand what they mean for everyday life, and learn which steps and questions help you have a focused conversation with your doctor.
Blood oxygen level
Introduction
Overview
Blood oxygen level is a term referring to the concentration of oxygen in the blood. The human body requires and regulates a very precise and specific balance of oxygen in the blood.
This balance is maintained for the most part by chemical processes in the body to sustain aerobic metabolism and life.
Pulse oximetry is a method used to measure the concentration of oxygen in the blood.
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]