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Definition and distribution[edit | edit source]

Leukocytosis is an increased number of leukocytes in a person's blood. It can be caused by a reactive (secondary) or malignant cause. Depending on the type of leukocyte, we recognize the following types of white line defects, which are also causes of leukocytosis:

  • Neutrophilia – an increase in the absolute number of neutrophils in the peripheral blood above the limit of 7.5 × 109/l.
  • Lymphocytosis – an increase in the number of lymphocytes in the peripheral blood above the limit of 4.5 × 109/l.
  • Basophilia – an increase in the number of basophils in the peripheral blood above the limit of 0.1 × 109/l.
  • Monocytosis – an increase in the number of monocytes in the peripheral blood above the limit of 0.8 × 109/l.
  • Eosinophils – an increase in the number of eosinophils in the peripheral blood above the limit of 0.25 × 109/l.

Causes of leukocytosis[edit | edit source]


Neutrophilia[edit | edit source]

Neutrophilia can be caused by a number of causes. These causes include:

  • smoking

Lymfocytosis[edit | edit source]

Lymphocytosis is usually caused by an acute viral infection or a chronic infection. Other various causes include:

  • malignancies (leukemia and lymphomas),
  • injuries
  • excessive physical exertion
  • stress lymphocytosis (after a myocardial infarction or with lymphocytosis after adrenaline).

Bazophilia[edit | edit source]

Most of the causes of basophilia are life-threatening, which is why early diagnosis and then prompt treatment are important. These causes include:


Monocytosis[edit | edit source]

The causes of monocytosis also usually include life-threatening conditions, early diagnosis and then quickly started treatment is important. Such causes include:


Eozinofilia[edit | edit source]

Eosinophilia can be caused by:

  • parasitic disease
  • condition after infectious mononucleosis

Diagnose[edit | edit source]

Leukocytosis is detected as part of a differential blood count examination.

Links[edit | edit source]

Related articles[edit | edit source]

External links[edit | edit source]

Bibliography[edit | edit source]

  • DZÚRIK, Rastislav. Štandardné terapeutické postupy. 1. edition. Osveta, 1997. ISBN 80-217-0465-9.
  • DOBROTOVÁ, Miroslava, et al. Hematológia a transfuziológia :  učebnica. 1. edition. Grada ; Bratislava : Grada Slovakia, 2006. ISBN 80-8090-000-0.