Normal Reference Ranges
Adult
100 - 700 cells/µL
Pediatric
100 - 800 cells/µL
Clinical Significance
Phagocytic cells that migrate into tissues to become macrophages. Generally elevated in more chronic, subacute, or recovering infectious states.
Causes of High
- Chronic infections (Tuberculosis, Endocarditis)
- Autoimmune diseases
- Monocytic leukemia
- Recovery phase of acute infection
Causes of Low
- Aplastic anemia
- Hairy cell leukemia
- Corticosteroids