Neutrophils: normal range and what it means
The main bacteria-fighting white cells (% of WBC).
Normal range
Adult reference range.
- Low< 40 %
- Normal40 – 75 %
- High≥ 75 %
What it measures
The white cells that arrive first at a bacterial infection, and the largest share of your total count. They rise quickly with infection, injury and physical stress.
What moves it
The fastest-moving white cell line. Bacterial infection, physical stress, smoking and steroids raise it; it can dip after viral illness.
How to bring it into range
They follow whatever is happening rather than responding to lifestyle. Recent exercise, smoking and steroids all raise them.
How fast it responds
Hours.
Also reported as: neutrophil percent
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Common questions
- What is a normal Neutrophils level?
- Normal: 40 – 75 %. Adult reference range.
- What does a high Neutrophils mean?
- A value above the reference band means Neutrophils is outside the range typical for a healthy adult. A single reading is rarely conclusive on its own — what matters is the trend across draws and the other markers around it, which is why HealthOS reads the whole panel together rather than one number at a time.
- How do I improve my Neutrophils?
- They follow whatever is happening rather than responding to lifestyle. Recent exercise, smoking and steroids all raise them.
Related markers
More in Complete Blood Count
Reference ranges are general-population guidance compiled from common clinical laboratories, not a diagnosis. Lab-to-lab ranges differ. Always read your results with your doctor.