A normal oxygen saturation level for a healthy person at sea level is between 95% and 100%. However, oxygen saturation levels may be slightly lower at higher elevations.
You can use a pulse oximeter to measure your blood oxygen level. If your home SpO2 reading is lower than 95%, you should call your health care provider.
Here are some other oxygen levels to consider:
Chronic lung disease or sleep apnea: Some people with these conditions can have normal levels around 90%.
Chronic hypercapnic conditions: Target oxygen saturations are generally between 88 to 92%.
Medical emergencies: High concentrations of oxygen are required for shock, sepsis, major trauma, cardiac arrest, anaphylaxis, and carbon monoxide and cyanide poisonings.
Factors that can contribute to a right shift in the oxygen dissociation curve include: Increased body temperature, Decreased pH, and Increased 2,3-BPG.
Disorders that can impair oxygen transportation include: Anemia, Thalassemias, Sickle cell anemia, and Carbon monoxide poisoning.
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