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What Is Desired Oxygen Level in Blood?

The body's cells get oxygen when you breathe in, allowing oxygen to enter the bloodstream through capillaries, where it is then carried to the cells. Falling below normal blood oxygen saturation ranges results in health problems.

  1. Normal Blood Oxygen Levels

    • Ninety-five to 100 percent saturation is the normal blood oxygen level range. It is measured by blood test or by a finger oximeter.

    Low Blood Oxygen Symptoms

    • A person with low blood oxygen may experience fatigue, confusion and difficulty exercising. However, shortness of breath is most common.

    Causes of Low Blood Oxygen

    • There are many causes of low blood oxygen, including carbon monoxide poisoning, heart disease, anemia, lung disease, breathing conditions, sleep apnea, high altitudes and airway blockage.

    Warnings

    • Severe shortness of breath requires immediate medical attention.

    How to Improve Blood Oxygen Levels

    • There are several ways to improve blood oxygen levels, including regular exercise, cessation of smoking and avoidance of second-hand smoke. Oxygen therapy may be required in some cases.

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