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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.

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
30903-9
Short code
Neutrophil OB Bld Ql FC
Synonyms
Neutrophil OB Bld Ql FC
Category
chemistry
Sample
whole-blood
Container
Lavender-top (EDTA)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
flow-cytometry
Specimen volume
3 mL
Stability
Room temperature: 4h, Refrigerated: 24h
Hemolysis max
0
Lipemia max
0
Icterus max
0
TAT
4–24 hours
Order
routine

Why Is This Test Done?

Doctors may order this test to diagnose or monitor conditions like infections (such as bacterial infections), inflammatory diseases, or certain blood disorders. It can also help assess how your body is responding to treatment for these conditions.

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, and you may feel a brief pinch or slight discomfort.

What the Results Mean

Results are typically reported as the absolute count of neutrophils per microliter (cells/µL) of blood. High or low counts can indicate different health issues, so always discuss your results with your healthcare provider.

Common Conditions Affecting Neutrophil Counts

High neutrophil counts might suggest infections, stress, or certain inflammatory conditions. Low counts could indicate infections, autoimmune diseases, or other health problems affecting your immune system.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Neutrophils play a critical role in combating bacterial infections and responding to inflammation. Abnormal counts can signal underlying health concerns that need medical evaluation.

Short name

Neutrophil Count

Frequently asked questions

What causes a high neutrophil count?
High neutrophil counts can be due to infections (like bacterial infections), stress, smoking, or certain medications. Chronic conditions such as inflammatory diseases may also contribute.
What causes a low neutrophil count?
Low neutrophil counts may result from infections, autoimmune diseases, chemotherapy, or certain blood disorders. Severe cases can lead to increased risk of infections.
How often should I get this test?
Your healthcare provider will determine the frequency based on your medical history, symptoms, and treatment plan. Regular monitoring may be needed if you have ongoing health conditions.
  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