White Blood Cell Differential (Qualitative) with Other Granulocyte Subtypes
This test evaluates the types and proportions of white blood cells in your blood, including specific subtypes like neutrophils, eosinophils, and basophils, to help assess immune function and potential infections or inflammatory conditions.
["This test helps identify imbalances in your immune system or response to illness."]
Key facts at a glance
- LOINC
- 32808-8
- Short code
- WBC Other NFr Bronch
- Synonyms
- WBC Other NFr Bronch
- 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
Why This Test Is Done
Doctors may order this test to diagnose or monitor conditions such as infections (like bacterial or viral), autoimmune diseases, blood disorders, or allergic reactions. It can also help track responses to treatments, such as chemotherapy or steroids.
What to Expect Before the Test
No special preparation is needed for this test. You’ll typically have a small needle inserted into your arm to draw a small amount of blood. If you’re on blood thinners or have a history of bleeding issues, let your doctor know.
What the Test Results Mean
Results show the percentage of each white blood cell type. For example, an elevated neutrophil count might suggest infection, while a high eosinophil count could indicate allergies or parasitic infections. Abnormal results may prompt further testing.
Common Conditions Linked to Abnormal Results
High or low counts of certain white blood cells can signal conditions like leukemia, chronic infections, or inflammatory diseases. For instance, a low neutrophil count may mean you’re more prone to infections, while a high eosinophil count could point to allergies or asthma.
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 (Qualitative)
Frequently asked questions
What causes a change in white blood cell counts?
How often should I get this test?
Can diet or lifestyle 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