Q:

What is a dangerous hemoglobin level?

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Quick Answer

A dangerous hemoglobin level is hemoglobin greater than 18.5 g/dL in men and 16.5 g/dL in women, Medscape states. This is known as polycythemia.

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Full Answer

Someone suffering from polycythemia is at risk for blood clots, heart conditions, kidney dysfunction and spent marrow. When someone has a high hemoglobin count, their blood thickens, which makes it harder for the heart to pump it around the body. In severe cases, this can cause pulmonary embolisms, strokes and heart attacks, all of which may result in death.

In addition, a man with less than 13.5 g/dL and a woman with less than 12 g/dL hemoglobin is at risk of anemia, although this is rarely problematic, according to Mayo Clinic.

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    What is a normal hemoglobin level?

    A:

    Mayo Clinic states that normal hemoglobin levels for adult males are between 13.5 and 17.5 grams per deciliter of blood, and normal female levels are 12.0 to 15.5 grams per deciliter of blood. Normal levels for children vary by age and gender.

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  • Q:

    What is a dangerously low hemoglobin level?

    A:

    Dangerously low hemoglobin levels that require transfusion are 7 grams per deciliter for ICU patients and 8 milligrams per deciliter for most other patients, according to U.S. News. Low hemoglobin is anything below 13.5 grams per deciliter for men, and 12 grams per deciliter for women, according to Mayo Clinic.

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    What is a dangerous blood oxygen level?

    A:

    Blood oxygen levels under 90 percent are considered low and warrant immediate medical attention, according to the Mayo Clinic. A dangerous blood oxygen level, also called hypoxemia, occurs when a lower-than-average level of oxygen is circulating from the blood to the cells and tissues of the body. Normal blood oxygen levels are within the 95 to 100 percent range.

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    What is a dangerous glucose level?

    A:

    Blood sugar that is below 70 or above 300 is dangerous, and immediate medial help should be sought, states University of Washington's Women's Health. If blood sugar is below 90 or above 160, effort should be made to maintain safer blood sugar levels.

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