Neutrophil Band Count (Qualitative Neutrophil Band Cell Identification)
This test checks the presence or absence of immature white blood cells called neutrophil bands in your blood, which can help identify infections or other immune system responses.
["Neutrophil bands may signal an infection or inflammation needing further medical evaluation."]
Key facts at a glance
- LOINC
- 99604-1
- Short code
- Neuts Band NFr Plr Manual
- Synonyms
- Neuts Band NFr Plr 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
What Are Neutrophil Bands?
Neutrophil bands are a type of immature white blood cell produced during an infection or immune response. They appear in the bloodstream when the body needs extra support to fight pathogens like bacteria. This test helps doctors determine if your immune system is responding to an infection or other conditions that cause immature white cells to develop.
Why Might This Test Be Ordered?
Your healthcare provider may order this test if you have symptoms like fever, rapid heartbeat, or signs of infection (such as redness, swelling, or pus). It can also be used to monitor conditions like severe infections, certain cancers, or immune disorders where immature white blood cells play a role.
How Is the Test Performed?
A small amount of blood is drawn from a vein, usually in your arm. The sample is then examined under a microscope to count and identify different types of white blood cells, including neutrophil bands. This is a qualitative test, meaning it only reports whether bands are present or absent, not their exact quantity.
What Does a Positive Result Mean?
A positive result (presence of neutrophil bands) often indicates an active infection or an immune response requiring further investigation. Your doctor may order additional tests or treatments based on these findings.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
Neutrophil bands are typically elevated in conditions such as bacterial infections, severe inflammation, or certain blood disorders. They can also appear in response to stress or trauma. While this test is useful for identifying potential issues, it is not a standalone diagnosis and should be interpreted alongside other clinical findings.
Short name
Neutrophil Bands (Qualitative)
Frequently asked questions
Why was I asked to have this test done?
What does it mean if I have neutrophil bands in my blood?
Can I do anything to prepare for this test?
Sources
- 1
- 2Lab Tests OnlineSource
- 3
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.
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