White Blood Cell Differential with Other Granulocyte Subtypes (Qualitative)
This test examines the types of white blood cells in your blood, focusing on the proportions of different granulocyte subtypes beyond the standard white blood cell count. It helps identify specific immune cell distributions that may relate to infections, inflammation, or other conditions.
["Understanding your granulocyte subtypes can help pinpoint causes of immune or inflammatory concerns."]
Key facts at a glance
- LOINC
- 67830-0
- Short code
- WBC Other # Pcar
- Synonyms
- WBC Other # Pcar
- Category
- chemistry
- Sample
- serum
- Container
- Red-top tube (SST)
- 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
- 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 Is Measured?
The test evaluates qualitative proportions of non-standard granulocyte types (e.g., eosinophils, basophils, or atypical neutrophils) beyond the typical white blood cell categories. While not all subtypes are measured individually, the report may indicate deviations in granulocyte distribution patterns.
Why Might This Test Be Ordered?
Your healthcare provider may order this test if you have symptoms like persistent infections, unusual allergic reactions, or signs of immune system dysfunction. It can also be part of a broader evaluation for conditions affecting white blood cell function.
How Is the Test Performed?
A blood sample is drawn, typically from a vein in your arm. The sample is analyzed under a microscope to count and classify white blood cells, focusing on granulocyte subtypes beyond routine categories. Results are qualitative, indicating relative proportions rather than absolute counts.
What Does the Test Result Mean?
Results are interpreted by your healthcare provider based on your clinical picture. Elevated or reduced proportions of certain granulocyte subtypes may suggest underlying conditions like allergies, infections, or immune disorders. Normal ranges vary by lab and individual health status.
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 'WBC Differential (Other Granulocytes)' test measure?
How often should I expect this test?
Can results affect my treatment?
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