Complete Blood Count (CBC)Reported in %Neutrophils (percent)
The percentage of white cells that are neutrophils, the first responders to bacterial infection.
What it measures
Neutrophils are the most numerous white cell in most adults. They move quickly to bacteria and to injured tissue. The percent on the differential says what share of the white cells they represent. It is easy to misread, because the share changes whenever another cell type changes.
Why it is on the panel
It is the top line of the differential. Bacterial infection, steroids, and stress classically raise the neutrophil share. The absolute neutrophil count, listed separately, is the number used to decide whether the count is truly high or low.
How to read it
Prefer the absolute count when the two disagree. A high percentage with a normal absolute count often just means lymphocytes are low. A normal percentage with a high absolute count means the whole white count rose and neutrophils rose with it.
When it runs higher
A larger share is common in bacterial infection, inflammation, corticosteroid use, and after exercise or significant stress. Smoking can raise it as well.
When it runs lower
A smaller share can mean lymphocytes have increased, as they often do in viral illness, or that neutrophils themselves are scarce. Check the absolute neutrophil count before calling it a low neutrophil result.
How to use this page
This page explains what the measurement is for. It is educational. Your Healiam report includes the reference interval for your age and sex, and a clinician reads that result with your history, medicines, and the rest of the panel. Talk with a clinician before changing diet, supplements, or treatment because of a number on a report.
Neutrophils
Neutrophils is part of the full panel.
No referral or insurance required.
One preventive draw covers this measurement and the rest of the Healiam panel. CLIA-certified results come back in days.