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Neutrophil Absolute Count (from Whole Blood)

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; their count helps doctors assess infection risk or response to treatment."]

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

Key facts at a glance

LOINC
756-7
Short code
Neutrophils # Plr Auto
Synonyms
Neutrophils # Plr Auto
Category
chemistry
Sample
fluid
Container
Sterile tube
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
automated-count
Specimen volume
2-5 mL
Stability
Room temperature: 2h, Refrigerated: 24h
Hemolysis max
300
TAT
4–24 hours
Order
routine

Why This Test Is Done

Doctors may order this test to diagnose or monitor conditions like infections (such as bacterial infections), inflammatory diseases, or certain blood disorders. It can also help evaluate how well your body is responding to treatments for these conditions.

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 a blood sample. The process is quick and usually painless. If you’re nervous, let your healthcare provider know.

What the Results Mean

Results show the absolute number of neutrophils per microliter (µL) of blood. High neutrophil counts may indicate infection, inflammation, or other conditions. Low counts could signal immune suppression or certain blood disorders. Always discuss your results with your doctor.

Common Conditions Affecting Neutrophil Counts

High neutrophil counts might be seen in infections (like pneumonia or urinary tract infections), autoimmune diseases, or stress. Low counts could be linked to immune deficiencies, chemotherapy, 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

How often do I need this test?
The frequency depends on your health condition and treatment plan. If you have an ongoing infection or illness, your doctor may order this test more often to monitor your response. If you’re healthy, it might be done as part of routine check-ups or only when symptoms appear.
Can I eat or drink before this test?
You can eat and drink normally before the test unless your doctor instructs otherwise. No fasting is required.
What if my neutrophil count is too high or too low?
If your count is outside the expected range, your doctor will review your results with you and may recommend additional tests or treatments. High counts might lead to further evaluation for infections or inflammation, while low counts could prompt checks for immune issues or side effects from medications.
  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