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Neutrophil count (absolute)

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 protect your body from bacterial infections by attacking invaders."]

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

Key facts at a glance

LOINC
23761-0
Short code
Neutrophils NFr Bld Manual
Synonyms
Neutrophils 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

Why This Test Might Be Ordered

Your healthcare provider may order this test if you have symptoms like frequent infections, fever, or signs of an immune system issue. It could also be checked before surgery or during treatment for conditions like cancer or autoimmune diseases.

What to Expect Before the Test

No special preparation is needed for this blood test. You may have a small needle inserted into your arm to draw blood, similar to a routine blood draw.

What the Results Mean

Results are typically reported as a count of neutrophils per microliter (µL) of blood. Low counts may indicate infections, bone marrow disorders, or certain medications. High counts can signal infections, inflammation, or other health issues.

Common Conditions Affecting Neutrophil Levels

Low neutrophil counts (neutropenia) can make you more prone to serious infections. High neutrophil counts (neutrophilia) might suggest ongoing infections or inflammatory processes.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Neutrophils play a critical role in defending against bacterial infections. Abnormal levels can indicate underlying health problems that need medical attention, such as immune deficiencies, chronic illnesses, or certain medications affecting blood cell production.

Short name

Absolute Neutrophil Count (ANC)

Frequently asked questions

What causes a low neutrophil count?
Low neutrophil counts can result from infections, certain medications (like chemotherapy), autoimmune diseases, or conditions affecting bone marrow function. It’s important to discuss symptoms and medical history with your doctor.
How is a neutrophil count tested?
The test involves drawing a small amount of blood from your arm. The blood is then analyzed in a lab to count the neutrophils. This is a quick and painless procedure.
Can I eat or drink before this test?
No special diet or fasting is required for this test. However, always follow your healthcare provider’s instructions for any specific preparations.
  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