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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, in your blood. Neutrophils help fight infections and inflammation.

Quick summary

["Neutrophil counts help diagnose and monitor infections, inflammatory conditions, and other blood disorders."]

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

Key facts at a glance

LOINC
41617-2
Short code
Neutrophil Ab Ser Ql FC
Synonyms
Neutrophil Ab Ser Ql FC
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
flow-cytometry
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, such as bacterial infections, or to evaluate conditions like chronic inflammation, autoimmune diseases, or certain blood disorders. It can also help monitor responses to treatments.

What to Expect Before the Test

No special preparation is needed. You may 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 typically reported as the absolute count of neutrophils per microliter (µL) of blood. High counts may indicate infection or inflammation, while low counts could suggest immune disorders or other health issues.

Common Conditions Affecting Neutrophil Counts

High neutrophil counts might be seen in bacterial infections, stress, or certain cancers. Low counts can occur with viral infections, certain medications, or genetic disorders affecting white blood cells.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Clinical Significance: Neutrophils play a critical role in the body’s immune response. Elevated levels often signal active bacterial infection or inflammation, guiding treatment decisions. Reduced levels may indicate weakened immunity or underlying conditions requiring further investigation.

Short name

Neutrophil Count

Frequently asked questions

How often will I need this test?
The frequency depends on your health condition and treatment plan. Your healthcare provider will let you know if repeat testing is needed.
What are the possible risks of this test?
The main risk is a minor bruise, swelling, or slight pain at the needle insertion site. Rarely, there may be a reaction to the blood draw.
Can I eat or drink before this test?
You can eat and drink normally unless your provider gives specific instructions, as no fasting is required.
  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