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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 and inflammation."]

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

Key facts at a glance

LOINC
26503-3
Short code
Neutrophils # Smn
Synonyms
Neutrophils # Smn
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

Why Is This Test Done?

Your doctor may order this test to check for infections, inflammation, or other conditions that affect your immune system. High or low neutrophil counts can signal problems like infections, autoimmune diseases, or blood disorders.

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, which usually takes a few minutes. If you’re anxious, let your healthcare provider know.

What the Results Mean

Results are compared to a general reference range for healthy adults. Very high or very low counts may indicate health concerns that need further evaluation.

Common Conditions Affecting Neutrophils

High neutrophil counts might suggest infections (especially bacterial), stress, or certain cancers. Low counts could indicate immune disorders, severe infections, or medications that suppress white blood cells.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Neutrophils play a critical role in fighting bacterial infections and responding to inflammation. Abnormal counts can signal underlying health issues that require medical attention, such as infections, autoimmune diseases, or blood disorders.

Short name

Neutrophil count

Frequently asked questions

What causes my neutrophil count to be unusually high?
High neutrophil counts are often due to infections (like bacterial), stress, or inflammation. Your doctor may also check for conditions like leukemia or other immune-related disorders.
Can diet affect neutrophil counts?
Diet may influence overall immune function but doesn’t directly alter neutrophil counts. Focus on a balanced diet to support your immune system.
Will repeated tests be needed if my results are abnormal?
Yes, your doctor may order follow-up tests or additional evaluations to determine the cause of abnormal results. They’ll guide you on next steps.
  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