Conclusions: Many low-cost pulse oximeters sold to consumers demonstrate highly inaccurate readings. Unexpectedly, the accuracy of some low-cost pulse oximeters tested here performed similarly to more expensive, ISO-cleared units when measuring hypoxia in healthy subjects.
Are generic pulse oximeters accurate?
Pulse oximeters are least accurate when oxygen saturations are less than 80%. ... For example, a pulse oximeter saturation of 90% may represent an arterial blood saturation of 86-94%. When possible, make diagnosis and treatment decisions based on trends in pulse oximeter readings over time, rather than absolute thresholds.19 feb 2021
Are all pulse oximeters the same?
Since pulse oximetry is not standardized across manufacturers, it isn't uncommon for different pulse oximeters to show variability in oxygen readings on the same patient.11 oct 2019