Neutrophil count (absolute) with automated differential analysis
This test measures the number of neutrophils, a type of white blood cell, and helps assess your immune response and risk of infection.
["Neutrophils are key defenders against bacterial infections; low or high levels may signal health concerns."]
Key facts at a glance
- LOINC
- 758-3
- Short code
- Neutrophils # Prt Auto
- Synonyms
- Neutrophils # Prt Auto
- Category
- chemistry
- Sample
- serum
- Container
- Red-top tube (SST)
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Method
- automated-count
- 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 a Neutrophil Count?
Neutrophils are a type of white blood cell that fight infections, especially bacterial ones. This test checks both the total count of neutrophils and their proportion among all white blood cells, often done automatically to streamline results. A complete blood count (CBC) typically includes this measurement, but some labs may perform it separately for detailed analysis.
Why Might You Need This Test?
Your doctor may order a neutrophil count if you have symptoms like frequent infections, fever, fatigue, or signs of inflammation. It can also help monitor conditions like autoimmune diseases, certain cancers, or infections. Neutrophils can rise in response to acute infections or stress and may drop in conditions like severe anemia or certain cancers.
How Is the Test Performed?
A small blood sample is drawn from a vein, usually in your arm. The sample is then analyzed automatically to count neutrophils and other white blood cells. Results are typically available within 24 hours.
What Do the Results Mean?
Results are compared to general reference ranges, but exact values can vary by lab. High neutrophil counts may indicate infection, inflammation, or stress, while low counts could signal immune suppression or other health issues. Your doctor will interpret results in the context of your symptoms and medical history.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
Neutrophil counts are critical for diagnosing and managing infections, inflammatory diseases, and conditions affecting the immune system. Elevated neutrophils often point to acute bacterial infections, while persistently low levels may suggest chronic conditions like leukemia, severe infections, or immune deficiencies. Monitoring trends in neutrophil counts helps guide treatment decisions, such as adjusting antibiotics or managing underlying diseases.
Short name
Neutrophil count
Frequently asked questions
How often should I expect to have this test?
What are typical reference ranges for neutrophils?
Can lifestyle changes, like diet or exercise, affect neutrophil counts?
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