Be aware that multiple factors can affect the accuracy of a pulse oximeter reading, such as poor circulation, skin pigmentation, skin thickness, skin temperature, current tobacco use, and use of fingernail polish.

Which finger is best for pulse oximeter reading?

Which finger is best for the pulse oximeter? The right middle finger and right thumb have statistically higher value, making them perfect for a pulse oximeter. Is 94 blood oxygen level low? Any reading between 94 - 99 or higher reflects normal oxygen saturation.

How do I know if my oximeter is working?

Put the probe on your own finger and check it is working! Oximeters need a flow of blood through the finger to function. Some oximeters give an indication of the blood flow detected. In this oximeter there is a scale which is an indication of the blood flow.