iHealth pulse oximeters can record perfusion index (PI).
Perfusion Index is the ratio of pulsing to non-pulsing blood. This represents a measure of peripheral perfusion that can be tracked non-invasively. In other words, perfusion status is a good indicator of a user’s pulse strength or blood flow.
The normal perfusion index (PI) ranges from 0.02% to 20%.
However, there is no agreed-upon standard “normal value”. So, users should find their initial value and track changes over a period of time.
Poor perfusion status can be the result of the following: Artery Disease, Diabetes, Obesity, Blood Clots, and other medical conditions. Talk to your doctor to see what is normal for you.