Information about a laboratory test

Low Neutrophils: What Does It Mean?

A low neutrophil count may increase susceptibility to infection and can be associated with bone-marrow conditions, medicines, chemotherapy, or some infections.

Test summary

Test name
Neutrophils
Abbreviations
NEU, NEUT, ANC
Category
Hematology / Immunology
Panel
WBC Differential / Hemogram
Specimen
Whole blood
Common units
%, /µL, x10^9/L

What does the test measure?

Shows the percentage or absolute number of neutrophils, one of the most common types of white blood cell.

Why is the test ordered?

Used with the total WBC count and other white-cell subtypes, especially when evaluating infection and immune responses.

Information about a low result

A low neutrophil count may increase susceptibility to infection and can be associated with bone-marrow conditions, medicines, chemotherapy, or some infections.

Information about a high result

A high neutrophil count may be associated with infection, inflammation, physical stress, or certain medicines.

Reference and clinical context

Use the reference interval printed on your own laboratory report first. Reference intervals may vary by laboratory, method, unit, age, sex, pregnancy, specimen, and other conditions. Numeric records in this workbook are explicitly labeled as either source-based example reference intervals or clinical decision cutoffs.

Reference range 1

>= 40 – <= 60 %

Population
General
Specimen
Whole blood

Example differential percentage

MedlinePlus example differential percentage; absolute counts and lab-specific ranges may be more relevant.

Reference ranges may vary by laboratory, method used, age, sex, pregnancy status, and clinical context. The reference range on your own laboratory report takes precedence.

Interpretation notes

The neutrophil percentage can be misleading on its own; when available, the absolute neutrophil count (ANC) and the total WBC count should be considered together.

Related specialties

  • Hematology
  • Infectious Diseases
  • Internal Medicine
  • Pediatrics

Frequently asked questions

Sources

  1. Blood Differential — U.S. National Library of Medicine (MedlinePlus)

    Government medical reference · 2024 · Neutrophil, lymphocyte, monocyte, eosinophil, basophil roles and example percentages · Verified: Aug 11, 2026