Neutrophils are the most common type of white blood cell. They are the first responders to bacterial infections.
- Normal range (adults)
- 40–75%
- Sample
- Blood
- Fasting
- Not usually needed
- Also called
- Neutrophil, Neut, Polymorphs, PMN, Segs, Segmented Neutrophils
Neutrophils normal range
| Group | %Same unit in all countries |
|---|---|
| Adults | 40–75 |
Ranges vary slightly between laboratories. The range printed on your own report is the one to go by.
Why is the Neutrophils test done?
They are part of the WBC differential in a Complete Blood Count and help show what kind of infection or inflammation is present.
What does a high Neutrophils level mean?
A high neutrophil percentage (neutrophilia) usually points to a bacterial infection or physical stress.
Common causes
- Bacterial infections
- Inflammation, injury or surgery
- Steroid medicines
- Smoking
- Stress or heavy exercise
Diet and lifestyle tips
- Rest, hydrate and complete any antibiotics your doctor prescribes
- Eat a balanced, protein-rich diet while recovering
- Stop smoking
What does a low Neutrophils level mean?
Low neutrophils (neutropenia) reduce your protection against bacterial infection.
Common causes
- Viral infections
- Some medicines, including chemotherapy
- Autoimmune conditions
- B12 or folate deficiency
- Benign ethnic neutropenia (common and harmless in some people of African and Middle Eastern descent)
Diet and lifestyle tips
- Food safety: well-cooked meat and eggs, washed produce, pasteurised dairy
- Eat enough protein, B12 and folate
- Wash hands often
When should you see a doctor?
Fever with low neutrophils needs urgent medical care. Persistent abnormal values should be reviewed by a doctor.
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.