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Absolute Neutrophil Count (from Whole Blood)

Published: August 9, 2026Updated: August 16, 2026

This test measures the number of neutrophils, a type of white blood cell, in your blood. Neutrophils help fight infections.

Quick summary

["Neutrophils are key defenders against bacterial infections and inflammation."]

Medically reviewed by WellAlly Editorial TeamLast reviewed August 16, 2026Editorial policy

Key facts at a glance

LOINC
74398-9
Short code
Neutrophils # BldCo
Synonyms
Neutrophils # BldCo
Category
chemistry
Sample
whole-blood
Container
Lavender-top (EDTA)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Specimen volume
3 mL
Stability
Room temperature: 4h, Refrigerated: 24h
Hemolysis max
0
Lipemia max
0
Icterus max
0
TAT
4–24 hours
Order
routine

Why Might You Need This Test?

Your doctor may order this test to check for infections, inflammation, or blood disorders. Neutrophils can rise in response to infections, stress, or certain medications, and they may be low in conditions like autoimmune diseases or certain cancers.

What Does a Low or High Neutrophil Count Mean?

A low neutrophil count (neutropenia) can make you more prone to infections. A high count (neutrophilia) might indicate infections, inflammation, or other health issues like leukemia or stress.

How Is This Test Done?

A small blood sample is taken from a vein, usually in your arm. The sample is sent to a lab where it is analyzed to count the neutrophils.

What Are Common Causes?

Common causes of abnormal neutrophil counts include infections (bacterial or viral), autoimmune diseases, certain medications, or blood disorders like leukemia.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Neutrophil Count

Frequently asked questions

What does a normal neutrophil count feel like?
A normal neutrophil count is typically not associated with symptoms. However, if your count is low, you might feel more tired or prone to infections. If high, you may experience fever or other signs of infection.
How often should I get this test?
Your doctor will determine how often you need this test based on your health condition, symptoms, and medical history. Regular monitoring may be needed if you have a chronic illness or take certain medications.
Can lifestyle changes affect neutrophil counts?
Yes, lifestyle factors like stress, poor sleep, diet, and smoking can influence neutrophil levels. Maintaining a balanced diet, staying hydrated, and managing stress may help support your immune system.
  1. 1
    MedlinePlus — Laboratory TestsSource
  2. 2
    Lab Tests OnlineSource
  3. 3
    Mayo Clinic — Tests & ProceduresSource

Click any link to access the full source. PubMed Central (PMC) links provide free full-text access.

This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.

Medical Disclaimer

This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.

If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.

Medically reviewed by WellAlly Editorial Team Last reviewed August 16, 2026. · Read our editorial policy