Monocytes (abs.)
Immune system healthThe absolute count of monocytes per liter of blood.
Monocytes are white blood cells that migrate into tissues and become macrophages, where they engulf pathogens, dead cells, and debris. The absolute count is important because it reflects the actual capacity for tissue repair and immune surveillance independent of other white blood cell changes.
Reference range
0.10.9
Low
Normal
High
10E9/l
Source: lab benchmark
Reference ranges may vary between labs and assays. Always interpret results with your healthcare provider.
How this connects to other biomarkers
- Persistent absolute monocytosis > 1 × 10⁹/L raises concern for chronic myelomonocytic leukemia (CMML — a slow-growing bone marrow cancer), especially with reduced cell counts elsewhere.
- Reactive monocytosis is common in chronic infection (TB, endocarditis), autoimmune disease, and inflammatory bowel disease (with high hs-CRP).
- Low absolute monocytes may reflect corticosteroid therapy, chemotherapy, or aplastic anemia (bone marrow failure).
Included in
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