A painless diagnostic test that measures the amount of oxygen in a person’s blood. The test does not require a blood sample. Instead, a small device is placed on the finger, toe, or ear lobe. The device contains a sensor that is connected to a machine that displays the oxygen saturation and pulse rate of the person being tested.
The measurement by an oximeter of the proportion of oxygenated haemoglobin in the blood.
The use of an oximeter to determine the oxygen saturation of blood.