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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 that helps fight infections. Neutrophils are key players in your body’s immune response.

Quick summary

["Neutrophils help protect you from infections, but too few or too many can signal health concerns."]

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

Key facts at a glance

LOINC
48050-9
Short code
Neutrophils Stl Ql Wright Stn
Synonyms
Neutrophils Stl Ql Wright Stn
Category
chemistry
Sample
stool
Container
Clean container
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
wright-stain
Specimen volume
5 g
Stability
Refrigerated: 24h, Frozen: 7d
TAT
4–24 hours
Order
routine

What Neutrophils Do in Your Body

Neutrophils are a type of white blood cell that play a critical role in defending your body against bacteria and fungi. They rush to areas where infections occur, engulfing and destroying invaders. When your neutrophil count is measured, it helps doctors assess how well your immune system is responding to infections or other conditions.

Why This Test Might Be Ordered

Your doctor may order this test if you have symptoms like frequent infections, fever, fatigue, or swelling. It could also be checked before surgery, during chemotherapy, or if you have conditions like leukemia, autoimmune diseases, or certain infections.

When to Expect Results

Results for neutrophil counts are usually available within a few days after your blood sample is drawn. Your doctor will discuss the results with you and explain what they mean for your health.

What to Expect During the Test

A simple blood draw is used to collect the sample. You may feel a slight pinch, but it’s usually over quickly. No special preparation is needed unless your doctor instructs otherwise.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Clinical Significance

Short name

Absolute Neutrophil Count (ANC)

Frequently asked questions

What does a low neutrophil count mean?
A low neutrophil count (called neutropenia) can indicate an immune system that’s weakened, often due to infections, certain medications, or blood disorders. It increases your risk of serious infections, so doctors monitor it closely in patients undergoing treatments like chemotherapy.
What does a high neutrophil count mean?
A high neutrophil count (neutrophilia) may signal an active infection, inflammation, or stress response. It can also occur in conditions like acute infections, certain cancers, or stress-related reactions.
How often should I get this test?
Your doctor will determine how often you need this test based on your health condition, treatment plan, or symptoms. Regular monitoring may be needed if you have chronic illnesses or are undergoing treatments that affect 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