White Blood Cell Differential (with Other Granulocyte Subtypes) - Quantitative
This test measures the types and proportions of white blood cells in your blood, focusing on non-segmented neutrophils and other granulocyte subtypes. It helps assess immune function and identify infections or inflammatory conditions.
["Understanding your white blood cell types can help diagnose health issues or guide treatment plans."]
Key facts at a glance
- LOINC
- 35052-0
- Short code
- WBC Other # Plr
- Synonyms
- WBC Other # Plr
- Category
- chemistry
- Sample
- fluid
- Container
- Sterile tube
- Units
- N/A
- Ref low
- 4.5
- Ref high
- 11
- Critical range
- 2 N/A – 30 N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- CPT
- 85004
- SNOMED
- 900000000000003002
- Specimen volume
- 2-5 mL
- Stability
- Room temperature: 2h, Refrigerated: 24h
- Hemolysis max
- 300
- TAT
- 4–24 hours
- Order
- routine
What This Test Measures
The test evaluates specific white blood cell counts, including non-segmented neutrophils (bands) and other granulocytes like eosinophils, basophils, and possibly immature forms. These cells play key roles in fighting infections and responding to inflammation.
Why It Matters in Your Blood
Changes in these cell counts can signal conditions such as infections, autoimmune disorders, or bone marrow problems. For example, elevated bands may indicate an acute infection, while abnormal basophil counts could suggest allergies or myeloproliferative disorders.
How the Test Is Performed
A blood sample is drawn from a vein, typically in your arm. The sample is analyzed under a microscope to count and classify each type of white blood cell. This process helps determine their relative proportions and overall health status.
Common Conditions Monitored
Doctors use this test to diagnose or monitor conditions like bacterial infections, chronic inflammatory diseases, leukemia, or reactions to medications. It may also be used to evaluate immune responses or assess the effectiveness of treatments.
Reference range
Adult: 4.5-11.0 x 10^9/LN/A
No special preparation required. Stay well hydrated.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
◆Associated findings1
Short name
WBC Differential (Other Granulocytes)
Frequently asked questions
What does a high or low count of these cells mean?
Does this test require fasting?
How long does it take to get results?
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