compared pulse oximetry Apps downloaded on to iPhones to reference monitors within an Emergency room setting and found the Apps provided inaccurate measurements with a sensitivity for detection SpO2<94% on the reference monitor ranging from 0–69%.
How do I know if my oximeter is accurate?
Remove any fingernail polish on that finger. Sit still and do not move the part of your body where the pulse oximeter is located. Wait a few seconds until the reading stops changing and displays one steady number.
Are digital pulse oximeters accurate?
Digital pulse oximeters are easy-to-use and painless. Some versions are quite accurate. Hospitals and other medical settings have high-quality devices that measure blood oxygen within 2% to 4% of the true value. This means that the true reading could be 2-4% higher or lower than the true amount of oxygen in the blood.
