Monocytes are white blood cells that become macrophages in your tissues, where they clean up germs and dead cells.
- Normal range (adults)
- 2–10%
- Sample
- Blood
- Fasting
- Not usually needed
- Also called
- Monocyte, MONO, Mononuclear Cells
Monocytes normal range
| Group | %Same unit in all countries |
|---|---|
| Adults | 2–10 |
Ranges vary slightly between laboratories. The range printed on your own report is the one to go by.
Why is the Monocytes test done?
They are part of the WBC differential in a Complete Blood Count.
What does a high Monocytes level mean?
High monocytes (monocytosis) usually reflect a longer-lasting infection or inflammation.
Common causes
- Chronic infections such as tuberculosis
- Recovery from an acute infection
- Inflammatory bowel disease or autoimmune disease
- Rarely, blood disorders
Diet and lifestyle tips
- Anti-inflammatory eating: vegetables, fruit, oily fish, olive oil, nuts
- Limit processed and fried foods
What does a low Monocytes level mean?
Low monocytes are uncommon and usually not significant on their own.
Common causes
- Steroid medicines
- Chemotherapy
- Some bone-marrow conditions
Diet and lifestyle tips
- Balanced diet with enough protein
When should you see a doctor?
A persistent rise should be reviewed by your doctor, especially with fever, cough or weight loss.
Last updated
This page is for general education and is not a diagnosis. Normal ranges differ between laboratories, so always compare your result with the reference range printed on your own report, and discuss abnormal results with your doctor.