Patients with a fingertip pulse-oximeter reading of 94 percent or more but whose blood tests showed lower levels were deemed to have an unrecognized need for Covid therapy.

A normal blood oxygen level is between 95%-100% SpO2 on a pulse oximeter. Here's how to use an oximeter at home.

Learn about the pulse oximetry test, which measures your blood oxygen levels. Know the importance, how it’s performed, and what the results mean for your health.

Normal Ranges Most people have a normal resting pulse oximetry reading for oxygen saturation (SpO2) between 95% and 100%. This shows that your blood has an appropriate amount of oxygen.

A pulse oximeter reading indicates what percentage of your blood is saturated, known as the SpO2 level. A typical, healthy reading is 95–100%.

Image: S hutterstock A pulse oximeter measures blood oxygen saturation and heart rate by shining a light through the skin and detecting both the colour and movement of your blood cells. Blood cells ...

Your pulse oximeter will give you a numerical reading — a percentage that indicates the level of oxygen saturation in your blood. If you’ve been to a doctor in the past 20 years, you’ve ...