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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
753-4
Short code
Neutrophils # Bld Manual
Synonyms
Neutrophils # Bld Manual
Category
chemistry
Sample
whole-blood
Container
Lavender-top (EDTA)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
manual-count
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?

Your healthcare provider may order this test to check for infections, inflammation, or blood disorders. It’s often used to monitor conditions like leukemia, autoimmune diseases, or responses to treatments.

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. It usually takes a few minutes, and you may feel a brief pinch.

What the Results Mean

Results show the absolute number of neutrophils per microliter of blood. High levels may indicate infection, stress, or certain diseases, while low levels can signal immune suppression or conditions like aplastic anemia.

Common Conditions Monitored

This test helps diagnose or track conditions like chronic infections, neutropenia (low neutrophil count), or evaluate responses to chemotherapy or immune-suppressing treatments.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Neutrophils play a critical role in the body’s immune response. They’re the first line of defense against bacteria and are released in large numbers during infections. Abnormal counts can signal underlying health issues requiring further investigation.

Short name

Neutrophil Blood Count

Frequently asked questions

What causes high neutrophil counts?
High neutrophil counts can result from infections (especially bacterial), stress, inflammation, or certain medications. Chronic conditions like leukemia or Cushing’s syndrome may also be linked.
What causes low neutrophil counts?
Low neutrophil counts (neutropenia) can occur due to infections, autoimmune diseases, chemotherapy, or bone marrow disorders. Rarely, it may be genetic or linked to certain medications.
How often should I get this test?
Frequency depends on your health condition. Your doctor may recommend regular checks if you have a chronic illness, undergo treatment affecting your immune system, or have recurring infections.
  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