Diagnostic Tests and Surgical Procedures

Oxygen Saturation Test

What is the test? Your red blood cells carry oxygen through your arteries to all of your internal organs. They must carry enough oxygen to keep you alive. Normally, when red blood cells pass through the lungs, 95%-100% of them are loaded, or "saturated," with oxygen. If you have lung disease or other types of medical conditions, fewer of your red blood cells may be carrying their usual load of oxygen, and your oxygen saturation…

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