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A high lymphocyte count is an indicator of infection, autoimmune disorders and some types of cancer, explains Mayo Clinic. Lymphocytes are a type of white blood cell.


A high lymphocyte count, or lymphocytosis, can be caused by mononucleosis, multiple myeloma, human immunodeficiency virus, cytomegalovirus infection, acute lymphocytic leukemia, chronic lymphocytic leukemia, vasculitis and other viral infections.


A person who has lymphocytosis, or a high lymphocyte count, likely suffers from an infection, autoimmune disorder or cancer of the lymphatic system or blood. Physicians perform a variety of tests on patients presenting with a high lymphocyte count, depending on factors that indicate specific conditi


A normal lymphocyte count typically ranges from 1,000 to 4,800 lymphocytes per microliter of blood for an adult. In children, the count ranges from 3,000 to 9,500 lymphocytes per micro liter. According to the Department of Health and Human Services, counts less than1,000 lymphocytes in an adult is c


White blood cells, representing approximately 1 percent of the blood, provide resistance against infection and disease. Causes of low white blood count include viral infection, cancer, HIV, chronic disorders and chemotherapy, radiation and certain medications.


A low lymphocyte count can be caused by the body's inability to make lymphocytes, the body's inability to make the necessary amount of lymphocytes or when lymphocytes are trapped in the lymph nodes or spleen. Low lymphocyte counts can also be caused by diseases such as autoimmune disorders, infectio


A low lymphocyte count may mean the body is not making enough lymphocytes, according to the National Heart, Lung, and Blood Institute. A low count may also mean lymphocytes are getting destroyed or becoming stuck in the spleen or lymph nodes. A combination of these causes may also exist.


A high lymphocyte count is referred to as lymphocytosis and is caused by a bacterial or viral infection, cancer, autoimmune disorders, tuberculosis, HIV/AIDS or whooping cough, according to the Mayo Clinic. It is normal for lymphocyte levels to rise in response to infection.


The causes of a low lymphocyte count include leukemia, steroid use, HIV infection and sepsis, according to MedlinePlus. Chemotherapy and radiation exposure also affect lymphocyte levels. A lymphocyte is a type of white blood cell.


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.