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Neutrophil Absolute Count (Blood)

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 help your body defend against bacteria and infections."]

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

Key facts at a glance

LOINC
13597-0
Short code
Neutrophils NFr Nose
Synonyms
Neutrophils NFr Nose
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 This Test Is Done

Doctors may order a neutrophil count to check for infections, inflammation, or blood disorders. It can also help diagnose conditions like leukemia, autoimmune diseases, or infections caused by bacteria.

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.

What the Results Mean

Results are reported as the absolute number of neutrophils per microliter (µL) of blood. While reference ranges vary by lab, very high or very low counts may signal health concerns.

Common Conditions Affecting Neutrophils

High neutrophil counts may indicate infections, stress, or certain cancers. Low counts can suggest immune disorders, chemotherapy side effects, or severe infections.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Neutrophils are critical for fighting bacterial infections. Abnormal counts may signal underlying health issues like chronic inflammation, infections, or blood cancers. Always discuss results with your healthcare provider.

Short name

Neutrophil Count

Frequently asked questions

What causes a high neutrophil count?
High neutrophil counts can result from infections (like pneumonia or urinary tract infections), stress, smoking, or certain medications. Chronic conditions like inflammatory diseases may also play a role.
What causes a low neutrophil count?
Low neutrophil counts often occur due to infections, autoimmune diseases, chemotherapy, or bone marrow disorders. Rarely, it can be genetic or linked to certain medications.
How often should I get this test?
Your doctor will determine how often you need this test based on your symptoms, medical history, and treatment plan. Follow-up may be needed if you have ongoing health concerns.
  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