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Neutrophil Count (Absolute) in 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

["Your doctor may check your neutrophil count to monitor infection risk or response to treatment."]

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

Key facts at a glance

LOINC
74425-0
Short code
Myelocytes.neut NFr Bld Manual
Synonyms
Myelocytes.neut NFr Bld Manual
Category
chemistry
Sample
whole-blood
Container
Lavender-top (EDTA)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
manual-count
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

What Is a Neutrophil Count?

Neutrophils are a key part of your immune system. They’re the most common type of white blood cell and play a major role in defending your body against bacteria and some viruses. The test counts how many neutrophils are present in your blood sample.

Why Might This Test Be Done?

Doctors order this test to evaluate your immune response, detect infections, assess blood disorders (like leukemia), or monitor conditions that affect white blood cell production, such as chemotherapy or certain autoimmune diseases.

How Is the Test Performed?

A small amount of your blood is drawn from a vein, typically in your arm. The sample is then analyzed in a lab to count neutrophils and other blood cells.

What Do Results Mean?

Results are usually reported as a count of neutrophils per microliter (µL) of blood. While specific reference ranges vary by lab, very low counts may indicate infection risk or bone marrow issues, while very high counts could signal inflammation or other conditions.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Clinical Significance

Short name

Absolute Neutrophil Count (ANC)

Frequently asked questions

What causes a neutrophil count to change?
Neutrophil counts can rise due to infections (like bacterial infections), inflammation, or stress. They may drop due to infections, certain medications (e.g., chemotherapy), autoimmune diseases, or blood disorders. Always discuss results with your healthcare provider.
How often should I get this test?
Your doctor will determine how often you need this test based on your medical history, symptoms, and treatment plan. Regular monitoring may be needed if you have chronic conditions or are undergoing treatments that affect white blood cells.
Can I prepare for this test?
No special preparation is needed for this blood test. However, inform your doctor about any medications, supplements, or recent illnesses that might affect results.
  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