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 specific subtypes beyond the standard neutrophil count. It helps assess immune function and identify infections, inflammation, or other conditions affecting white blood cell counts.
["Understanding your white blood cell subtypes can reveal clues about your health beyond routine counts."]
Key facts at a glance
- LOINC
- 30410-5
- Short code
- WBC Other NFr Snv
- Synonyms
- WBC Other NFr Snv
- 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
Why This Test Is Done
Your doctor may order this test if you have symptoms like frequent infections, unexplained fevers, or signs of chronic inflammation. It can also be part of routine blood work for certain conditions or before treatments that affect the immune system.
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 blood. If you’re on blood thinners, let your provider know before the test.
What the Results Mean
Results show the percentage of different white blood cell types, including eosinophils, basophils, and other granulocytes. Abnormal levels may indicate infections, allergies, autoimmune diseases, or other health issues.
Common Conditions Linked to Abnormal Results
High levels of certain granulocytes (like eosinophils) may suggest allergies, parasitic infections, or autoimmune disorders. Low levels could indicate immune suppression or severe infections.
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.
This test is critical for diagnosing and managing conditions like chronic granulomatous disease, certain infections, or immune deficiencies. It helps tailor treatments to address specific white blood cell imbalances.
Short name
WBC Differential (Other Granulocytes)
Frequently asked questions
What causes abnormal white blood cell counts in this test?
How long does it take to get results from this test?
Can diet or exercise affect 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