What are Normal Oxygen Saturation Levels? The normal oxygen saturation level is 97–100% (OER #1). Older adults typically have lower oxygen saturation levels than younger adults. For example, someone older than 70 years of age may have an oxygen saturation level of about 95%, which is an acceptable level. It is important to note that the oxygen saturation level varies considerably based on a person’s state of health. Thus, it is important to understand both baseline readings and ... 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. Learn the ideal blood oxygen level range , how to measure it, and when to seek medical help. Find out how factors like activity, health, and wearable devices can affect your SpO2 readings. The Science Behind the Numbers Think of your blood as a delivery service. Red blood cells are the trucks, and oxygen is the precious cargo they transport throughout your body. When doctors talk about blood oxygen levels ( SpO2 ), they’re measuring how well this delivery system works. Normal levels typically range between 95-100%, but what does that really mean for you? This comprehensive chart breaks down everything you need to know about blood oxygen levels – from normal ranges across ...
