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Thrombocytosis (reactive)

Last reviewed dd mmm yyyy. Last edited dd mmm yyyy

Authoring team

Reactive thrombocytosis is commonly associated with:

  • inflammation
  • bleeding
  • malignancy
  • iron deficiency
  • following splenectomy

Counts may exceed 1,000,000 per cm^3. The platelets are functionally normal. Very severe iron deficiency may cause thrombocytopenia rather than thrombocytosis.

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