Q:

What is the normal range for lymphocyte count?

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Quick Answer

The normal range for lymphocytes in adults is 1000 to 4800 lymphocytes per microliter of blood, according to the National Heart, Lung, and Blood Institute. The normal range of lymphocytes in children is typically between 3000 and 9500 lymphocytes per microliter of blood.

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Full Answer

Lymphocytes are a type of white blood cell that makes up approximately 20 to 40 percent of all of the white blood cells in the human body, states the National Heart, Lung, and Blood Institute. The cells are created by the bone marrow and help to protect the body from foreign pathogens and infections. People with low lymphocyte counts may be at risk of developing frequent infections.

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    Acquired causes of a low lymphocyte count include steroid therapy; autoimmune disorders; radiation therapy; chemotherapy; blood diseases such as blood cancer; and infectious diseases such as tuberculosis, explains the National Heart, Lung, and Blood Institute. Inherited causes of a low lymphocyte count include DiGeorge anomaly and Wiskott-Aldrich syndrome.

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    What are the symptoms of a low lymph blood count?

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    Symptoms of a low lymphocyte count, or lymphocytopenia, include unusual, persistent or repetitive infections, according to the National Heart, Lung and Blood Institute. Other signs include enlarged spleens and swollen lymph nodes. However, on its own, the condition may not precipitate any symptoms, and physicians typically stumble on it while checking for other diseases.

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