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Neutrophil count (qualitative manual differential blood cell count)

Published: August 9, 2026Updated: August 16, 2026

This test evaluates the proportion of neutrophils, a type of white blood cell, in your blood using a manual microscopic count. Neutrophils help fight infections.

Quick summary

["Neutrophils are key defenders against bacterial infections; this test helps assess your immune response."]

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

Key facts at a glance

LOINC
760-9
Short code
Neutrophils # Snv Manual
Synonyms
Neutrophils # Snv Manual
Category
chemistry
Sample
fluid
Container
Sterile tube
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
manual-count
Specimen volume
2-5 mL
Stability
Room temperature: 2h, Refrigerated: 24h
Hemolysis max
300
TAT
4–24 hours
Order
routine

Why This Test Might Be Ordered

Your healthcare provider may recommend this test if you have symptoms like frequent infections, fever, or signs of inflammation. It could also be used to monitor conditions affecting white blood cells, such as certain cancers or immune disorders.

How the Test Works

A small blood sample is taken, and a trained technician will manually count the number of neutrophils under a microscope. This method provides detailed information about your neutrophil levels compared to other white blood cells.

Preparation

No special preparation is needed for this test. You may eat and drink normally as usual. If you are on blood-thinning medication, let your provider know before the test.

What to Expect During the Test

A healthcare professional will insert a needle into your arm to draw a small amount of blood. The process usually takes a few minutes. You may feel slight discomfort, but it is often brief.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Neutrophil check (manual)

Frequently asked questions

What does a high neutrophil count mean?
A high neutrophil count often suggests an active infection, inflammation, or a condition that stimulates your immune system excessively. It can also occur in response to stress, certain medications, or autoimmune diseases.
What does a low neutrophil count mean?
A low neutrophil count may indicate an increased risk of infections because these cells are vital for fighting bacteria. Causes can include certain medications, autoimmune disorders, or conditions affecting bone marrow function.
How often should I get this test?
The frequency depends on your medical condition and provider’s recommendations. If you have a chronic illness or are undergoing treatment, your provider may order this test regularly to monitor your immune response.
  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