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Oxygen saturation, or "O2 sat" for short, is a measure of how much oxygen is in your blood. For most healthy adults and children, a normal oxygen saturation level is between 95% and 100%. Hypoxemia occurs with lower levels of oxygen in the blood and can lead to complications or even death at dangerously low levels below 90%.
Your blood oxygen level (blood oxygen saturation) is the amount of oxygen that's circulating in your blood. It can be measured with a blood test or a pulse oximeter.
A blood oxygen level of 92% or higher is sufficient for most people. Your SpO2 level should stay above 92% when sitting, walking, running, sleeping, and doing various physical activities. Breathing slows when you sleep, so it's normal for your oxygen level to drop, but it should remain in a healthy range.
Doctors and other healthcare professionals use a small device called a pulse oximeter to measure oxygen saturation levels. These levels indicate the percentage of oxygen the hemoglobin in your blood is carrying compared with the maximum amount it could carry.
Oxygen saturation, measured with a pulse oximeter, is the amount of oxygen (in percent) bound to hemoglobin in red blood cells. The shortened form of the word is SpO 2 – saturation of peripheral oxygen.
Blood oxygen levels are indicated as SpO2, which is the percent saturation of oxygen in the blood. 95%-100%: Normal oxygen levels in a pulse oximeter usually range from 95%-100%. Note: Normal levels may vary if you have lung disorders. Your doctor can tell what levels are normal for you.
Pulse oximetry is a quick, noninvasive test that measures the oxygen saturation levels in the blood, using a device called a pulse oximeter. It helps monitor how well oxygen is being delivered throughout the body. It is commonly used in hospitals, healthcare provider offices, and at home.
Oxygen saturation refers to the percentage of oxygen in a person’s blood. Medical professionals can use a device called a pulse oximeter for either a quick test or continuous monitoring. A...
Oxygen saturation measures how much hemoglobin is bound to oxygen compared to how much hemoglobin remains unbound. At the molecular level, hemoglobin consists of 4 globular protein subunits. Each subunit is associated with a heme group.
Normal blood oxygen levels in adults are between 95% and 100% oxygen saturation (pulse oximeter reading). See a healthcare provider if your at-home blood oxygen measurement is 93% to 94%. Seek...