Pulse Oximetry
Pulse oximetry is used to measure the level of oxygen or oxygen saturation in your blood. This can be a painless and easy way to determine how well oxygen is transported to different parts of the body. People with pneumonia often have lower levels of oxygen in their bloodstream. Thus, a doctor would conduct this test to determine the presence of pneumonia. But just like a chest X-ray, pulse oximetry cannot identify the exact organism that triggers the condition. [5]
