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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 that helps fight infections. Neutrophils are key players in your immune response.

Quick summary

["Neutrophils help protect your body from bacterial infections; low or high levels may signal health concerns."]

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

Key facts at a glance

LOINC
32804-7
Short code
Neutrophils NFr Bronch Manual
Synonyms
Neutrophils NFr Bronch Manual
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
manual-count
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 an absolute neutrophil count to diagnose or monitor conditions affecting your immune system, such as infections, certain cancers, or blood disorders. It can also help assess how well your body is responding to treatments like chemotherapy.

What to Expect Before the Test

No special preparation is needed for this test. A healthcare provider will take a small blood sample from a vein in your arm, usually in a doctor’s office or lab. The process is quick and typically painless.

What the Results Mean

Results are reported as a count of neutrophils per microliter (µL) of blood. While reference ranges vary by lab, very low counts (below normal) may indicate immune suppression, while very high counts (above normal) could signal inflammation or infection.

Common Conditions Affecting Neutrophils

Low neutrophil counts may be linked to conditions like leukemia, HIV/AIDS, or autoimmune diseases. High neutrophil counts can occur with infections (e.g., bacterial), stress, or inflammatory conditions like rheumatoid arthritis.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Clinical Significance

Short name

Absolute Neutrophil Count (ANC)

Frequently asked questions

What does my neutrophil count tell me about my health?
A neutrophil count helps doctors determine if your immune system is functioning normally. For example, very low counts may mean you’re at higher risk for infections, while very high counts might suggest an active infection or other health issues requiring further evaluation.
Can I eat or drink before this test?
No special diet or fasting is required for this blood test. However, if you’re on blood thinners or have a history of clotting issues, let your provider know before the test.
How long will it take to get my results?
Results are usually available within 24 hours, depending on the lab’s processing time. Your doctor will discuss the findings with you during your follow-up visit.
  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