Skip to content

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 by attacking bacteria and other invaders.

Quick summary

["Neutrophils are key defenders against infections; low or high levels may signal health concerns."]

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

Key facts at a glance

LOINC
11115-3
Short code
Neutrophils NFr Mar Manual
Synonyms
Neutrophils NFr Mar Manual
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
manual-count
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

Why Is This Test Done?

Your healthcare provider may order this test to check for infections, blood disorders, or immune system issues. It’s often used when you have symptoms like fever, rapid heartbeat, or unexplained fatigue, or if you’re recovering from surgery or a serious illness.

What to Expect Before the Test

No special preparation is needed. You’ll have a small needle inserted into your arm or hand to draw blood. The process usually takes a few minutes, and you may feel a brief pinch. If you’re nervous, let your provider know—they can offer options like numbing cream.

What the Results Mean

Results are compared to your baseline or lab reference ranges (if applicable). Low neutrophil counts may indicate immune suppression, bone marrow problems, or severe infections. High counts could signal inflammation, infections, or certain medical conditions. Always discuss results with your provider.

Common Causes of Abnormal Results

Low neutrophil counts might be due to medications (e.g., chemotherapy), autoimmune diseases, or conditions like leukemia. High counts could stem from infections, stress, or chronic inflammation. Your provider will consider your full medical history and symptoms to interpret results accurately.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Clinical Significance

Short name

Absolute Neutrophil Count (ANC)

Frequently asked questions

What symptoms might indicate I need this test?
Symptoms like frequent infections, unexplained weight loss, fatigue, or easy bruising/bleeding could prompt a neutrophil count test. Your provider may also order it if you’re undergoing treatment for cancer, autoimmune diseases, or other conditions affecting your immune system.
How often should I get this test?
Frequency depends on your health status. If you have a chronic condition (e.g., cancer, HIV), your provider may monitor it regularly. Otherwise, it’s often done as needed for specific symptoms or medical decisions.
Can I eat or drink before this test?
You can eat and drink normally unless instructed otherwise. No fasting is required for this blood test.
  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