Key Information

Appropriate Tests


Review clinical findings. Full blood count, Blood film, White cell count differential.

See Table 4.

With monocytes showing normal morphology


Acute or chronic bacterial infection, especially

  • Tuberculosis




Hodgkin lymphoma


Recovery from agranulocytosis

See Neutropenia

Cytokine administration

Cytokines (eg, G-CSF, GM-CSF) commonly cause Neutrophilia and/or Monocytosis.

Chronic idiopathic neutropenia


Splenic atrophy/absence


With abnormal 'monocytoid' cells


Myelodysplasia, especially

  • Chronic myelomonocytic leukaemia

Monocyte morphology may be abnormal.

Acute myelomonocytic, monocytic leukaemia

See Acute leukaemia.

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