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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 are key defenders against bacterial infections."]

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

Key facts at a glance

LOINC
98658-8
Short code
Sensory NC Pnl L sural n
Synonyms
Sensory NC Pnl L sural n
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Specimen volume
5 mL
Stability
Room temperature: 4h, Refrigerated: 24h, Frozen: 7d
Hemolysis max
500
Lipemia max
1000
Icterus max
500
TAT
4–24 hours
Order
routine

What Neutrophils Do in Your Body

Neutrophils are a type of white blood cell that play a crucial role in your immune system. They help identify and destroy bacteria and other harmful invaders. When you have an infection, your body often produces more neutrophils to fight it off. This test helps doctors understand how well your immune system is responding to infections.

When This Test Might Be Ordered

Your doctor may order this test if you have symptoms of infection, such as fever, chills, or persistent cough. It might also be done before surgery to check your immune response or if you have conditions that affect your white blood cells, like certain blood disorders.

How the Test Works

A small sample of your blood is taken and examined under a microscope or through automated testing. The machine counts the number of neutrophils in your blood. This test is quick and usually done in a lab.

What to Expect Before the Test

You can have this test done at a doctor’s office, clinic, or lab. No special preparation is needed, but let your healthcare provider know if you are on any medications that might affect your blood count.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Clinical Significance

Short name

Absolute Neutrophil Count (ANC)

Frequently asked questions

Why is this test important?
A low neutrophil count can indicate a weakened immune system, which may be due to infections, certain medications, or underlying health conditions. A high neutrophil count might suggest an infection, inflammation, or other immune responses. Your doctor will use this test along with other information to diagnose and guide treatment.
How long will it take to get the results?
Results are typically available within a few hours to a couple of days, depending on the lab. Your doctor will discuss the results with you.
Can I eat or drink before this test?
No special diet or preparation is required for this blood test. You can eat and drink normally as usual.
  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