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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.

Quick summary

["Neutrophils are key defenders against 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
73066-3
Short code
Amitrip (neut) IgG SerPl Ql FC
Synonyms
Amitrip (neut) IgG SerPl Ql FC
Category
coagulation
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
flow-cytometry
CPT
82784
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?

Doctors may order this test to check for infections, blood disorders, or immune system issues. It’s often part of a full blood count (CBC) to monitor overall health or diagnose conditions like leukemia, autoimmune diseases, or severe infections.

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. The process takes about 5 minutes, and you may feel a brief pinch. If you’re nervous, let your healthcare provider know.

What the Results Mean

Results show the number of neutrophils per microliter of blood. While reference ranges vary by lab, very low counts may indicate infections, bone marrow disorders, or immune deficiencies. Very high counts could suggest inflammation, infections, or other conditions.

Common Conditions Monitored

This test helps diagnose or manage conditions like neutropenia (low neutrophil count), which can make you more prone to infections. It’s also used in cancer treatments (e.g., chemotherapy) to monitor side effects or adjust treatment.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Clinical Significance: Neutrophils play a critical role in fighting bacterial infections. Abnormally low counts may signal impaired immune function, while elevated counts can indicate inflammation, infections, or other systemic issues. Your doctor will interpret results in the context of your symptoms and medical history.

Short name

Absolute Neutrophil Count (ANC)

Frequently asked questions

What causes low neutrophil counts?
Low neutrophil counts can result from infections, certain medications (like chemotherapy), autoimmune diseases, or conditions affecting bone marrow production (e.g., aplastic anemia). Chronic illnesses like diabetes or kidney disease may also contribute.
What causes high neutrophil counts?
High neutrophil counts often signal infections (especially bacterial), inflammation, or stress responses. Conditions like acute infections, severe injuries, or certain cancers can trigger this response.
Can diet affect neutrophil counts?
Diet alone rarely changes neutrophil counts, but poor nutrition (e.g., vitamin deficiencies) may weaken your immune system indirectly. Focus on balanced meals and hydration to support overall health, but this test is primarily about blood cell counts.
  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