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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 and inflammation.

Quick summary

["Neutrophils are key defenders against bacterial infections and help manage inflammation in your body."]

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

Key facts at a glance

LOINC
11254-0
Short code
C pneum Ab Titr Ser
Synonyms
C pneum Ab Titr Ser
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 Matters

Neutrophils are a critical part of your immune system. High levels may indicate an active infection, inflammation, or certain blood disorders. Low levels can suggest immune deficiencies or other health conditions.

What to Expect Before the Test

No special preparation is needed for this test. You’ll have a small needle inserted into your arm or hand to draw a blood sample. It usually takes a few minutes. If you’re on blood thinners, let your provider know before the test.

What the Results Mean

Results are reported as the number of neutrophils per microliter (µL) of blood. While reference ranges vary by lab, values outside typical ranges can signal potential health concerns that your doctor will discuss with you.

Common Conditions Affecting Neutrophil Levels

High neutrophil counts might be seen in infections (like bacterial illnesses), chronic inflammation, or stress. Low counts could indicate immune disorders, certain cancers, or severe infections. Your doctor will consider your full medical history and other test results.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Clinical Significance

Short name

Neutrophil Count

Frequently asked questions

What causes my neutrophil count to be high?
High neutrophil counts are often linked to infections (such as pneumonia or urinary tract infections), inflammatory diseases (like rheumatoid arthritis), or stress from illness or surgery. Your doctor may also check for conditions like leukemia or other blood disorders.
What causes my neutrophil count to be low?
Low neutrophil counts can result from immune system disorders (like severe autoimmune diseases), certain medications, or conditions that affect bone marrow function (such as chemotherapy). Chronic infections or blood cancers may also play a role.
How often should I get this test?
Your doctor will determine how often you need this test based on your symptoms, overall health, and medical history. Regular monitoring may be needed if you have ongoing health conditions like infections, autoimmune diseases, or cancer.
  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