Leucopenia

EBM Guidelines
Aug 19, 2024 • Latest change Jan 19, 2026
Marjaana Säily

Table of contents

Extract

  • The majority of white blood cells are either neutrophils (band cells and polymorphonuclear neutrophilic granulocytes, 35–70%) or lymphocytes (20–45%). The share of other white blood cells, eosinophils and basophils (granulocytes) and monocytes, is clearly lower.
  • Leucopenia is almost always caused by a reduced number of neutrophils.
  • Lymphocytopenia is only seldom associated with a specific disease. It may be seen in acute or chronic infections caused by a variety of microbes as well as both in congenital and acquired immune deficiency states.

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D70*, Fever, Granulocyte Colony-Stimulating Factor, Granulocyte-Macrophage Colony-Stimulating Factor, Haematology, Hematopoietic Cell Growth Factors, Infectious diseases, Internal medicine, Leukocytes, Leukopenia, Lymphopenia, Neoplastic diseases, Neutropenia, Neutrophils, acute neutropenia, antineoplastic agent treatment, change in blood picture, chronic neutropenia, peripheral neutropenia, susceptibility to infections