Neutrophil Band Count, Manual Microscopy
A band neutrophil count measures the percentage of immature neutrophil forms (band cells) in a blood sample by manual microscopic review, helping assess the body's response to infection or inflammation.
["The band count is one part of a manual white blood cell differential that can signal increased production of young neutrophils, often during infection or stress."]
Key facts at a glance
- LOINC
- 11103-9
- Short code
- Neuts Band NFr Mar Manual
- Synonyms
- Neuts Band NFr Mar 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
What Are Band Neutrophils?
Neutrophils are the most common type of white blood cell and are important for fighting bacterial infections. Band cells are immature neutrophils that have not yet fully matured. A small number of band cells in the blood is normal, but a higher proportion can indicate that the bone marrow is releasing young white blood cells faster than usual.
How the Test Is Performed
A blood sample is drawn, usually from a vein in the arm, and a thin film of blood is placed on a glass slide. A trained laboratory professional examines the slide under a microscope and manually counts and classifies white blood cells, including the band forms, as part of a differential count.
Why Your Provider May Order It
A band count may be requested as part of a complete blood count with differential when there is concern about infection, inflammation, or another condition affecting white blood cells. Because it is counted manually, it can provide detailed information about which types of white cells are present.
Understanding Your Results
Your band count result is reported as a percentage or absolute number of white blood cells and should be interpreted together with your total white blood cell count and other differential results. Reference ranges vary by laboratory and population, so discuss your specific values with your healthcare provider.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
An elevated band neutrophil count, sometimes called a left shift, can be seen in acute bacterial infection, inflammation, tissue injury, or other stress states that prompt the marrow to release immature neutrophils. A normal or low band count does not by itself rule out infection, and results must be interpreted alongside the full blood count, symptoms, and clinical context.
Short name
Band Neutrophils
Frequently asked questions
Does a high band count always mean I have an infection?
Why is this count done manually?
Can medications or other conditions affect my band count?
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