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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.

Quick summary

["Neutrophils are key defenders against bacterial infections and inflammation."]

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

Key facts at a glance

LOINC
71606-8
Short code
Neutrophils NFr.DF Pcar Manual
Synonyms
Neutrophils NFr.DF Pcar 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 doctor may order this test to check for infections, inflammation, or blood disorders. It can also help monitor conditions like leukemia, autoimmune diseases, or after certain treatments that affect white blood cells.

What does a result mean?

Results are interpreted by your healthcare provider based on your overall health and symptoms. High neutrophil counts may suggest infection or inflammation, while very low counts could indicate immune suppression or other health issues.

How is the test performed?

A small sample of blood is taken from a vein, usually in your arm. The sample is then analyzed in a lab to count the number of neutrophils.

What can affect my results?

Factors like recent infections, stress, certain medications (e.g., steroids), or chronic illnesses can influence neutrophil levels. Smoking, diet, or recent blood transfusions may also play a role.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Neutrophils play a critical role in fighting bacterial infections and responding to acute inflammation. Abnormal counts can signal underlying health problems, such as chronic infections, autoimmune diseases, or conditions affecting white blood cell production.

Short name

Neutrophil count

Frequently asked questions

What are common reasons for this test?
Common reasons include diagnosing infections, evaluating symptoms like fever, fatigue, or unexplained weight loss, or monitoring conditions like cancer or immune disorders.
Is there any preparation needed?
No special preparation is usually required. However, inform your doctor about any medications you’re taking or recent illnesses.
How long does it take to get results?
Results are typically available within 1 to 3 business days, depending on your lab’s processing time.
  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