CBC with Differential and Blood Film Examination (Banded Neutrophils Count)
This test measures your blood cells, including white blood cell types, and examines a sample of your blood under a microscope to check for abnormal cells or signs of infection, inflammation, or other conditions.
["Helps diagnose and monitor blood disorders, infections, and overall health status."]
Key facts at a glance
- LOINC
- 62348-8
- Short code
- Chrom analy pnl Bld G-banded
- Synonyms
- Chrom analy pnl Bld G-banded
- Category
- chemistry
- Sample
- serum
- Container
- Red-top tube (SST)
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Method
- g-banded
- CPT
- 86038
- 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 Does This Test Measure?
The test includes a **complete blood count (CBC)**, which counts and measures different types of blood cells: red blood cells, white blood cells, and platelets. The differential part specifically categorizes white blood cells into neutrophils, lymphocytes, monocytes, eosinophils, and basophils. Additionally, a blood film is examined to identify any abnormal cells or cellular details.
Why Might You Need This Test?
A CBC with differential is often ordered to check for infections (like bacterial or viral), anemia, blood disorders (such as leukemia or thrombocytopenia), or to monitor chronic conditions like autoimmune diseases or cancer. It can also help assess your response to treatment.
How Is This Test Performed?
A small blood sample is taken from a vein, usually in your arm, using a needle. The blood is then analyzed in a lab to count cells and types, and a thin smear is prepared for microscopic examination to look for any abnormalities.
What Are the Possible Results?
Results may show elevated or low counts of specific white blood cells, red blood cells, or platelets. Abnormal cells or patterns on the blood film may indicate underlying health issues. Your healthcare provider will interpret these results in the context of your symptoms and medical history.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
◆Associated findings1
Short name
Complete Blood Count with Differential
Frequently asked questions
What does a banded neutrophil count measure?
How often should I get this test?
Can I eat or drink before 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