Lymphocytes represent approximately 20 – 40% of all white blood cells. The normal reference range for lymphocytes is between 1.5 – 3.6 cells/uL. There are two main structural categories of lymphocytes: large granular lymphocytes and small lymphocytes. LOW LYMPHOCYTE COUNT (LYMPHOCYTOPENIA) Low lymphocyte counts are not usually significant. Causes: Characteristic decreases in the lymphocyte count […]