What are Absolute Neutrophils?
Neutrophils are white blood cells that rapidly respond to infection, injury, or inflammation. When bacteria, fungi, or damaged tissue are detected, neutrophils are the first immune cells to arrive, engulfing pathogens and releasing enzymes to contain the threat before it spreads. They support the innate immune system, the part of immunity you’re born with.
An absolute neutrophil count reflects the total number of neutrophils circulating in your blood. It’s possible to have a normal neutrophil percentage but still have too few neutrophils overall if your total white blood cell count is low. Since infection risk is determined by how many neutrophils are present, ANC is an important indicator of your body’s ability to fight off infection or inflammation.
Why Do Absolute Neutrophils Matter?
- Arrive first at the site of infection by rapidly migrating through the bloodstream toward areas of bacterial or fungal activity
- Destroy pathogens before they can spread to surrounding tissue
- Trigger the wider immune response by releasing signals that recruit additional immune cells to the site
- Clear damaged tissue by releasing enzymes that break down debris so the healing process can begin
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How to Interpret Absolute Neutrophils
(Ranges may vary slightly by lab)
Standard reference ranges represent the middle 95% of healthy individuals but don’t necessarily reflect levels associated with longevity. Optimal ranges are derived from clinical guidelines, peer-reviewed research, and real-world outcomes data, with an emphasis on levels associated with peak functioning and reduced disease risk. They don’t necessarily reflect optimal immune balance and inflammatory control.
What Healthy Absolute Neutrophil Levels Support
- Improved immune responsiveness
- Lower risk of infection
- Better recovery from illness and injury
- Balanced inflammatory response
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Low Absolute Neutrophil Levels (Neutropenia)
Low absolute neutrophil levels reduce the body’s ability to fight infection, which can allow even minor infections to become serious. Symptoms are caused by the underlying infection.
Symptoms:
- Often none, initially
- Fever
- Chills
- Mouth sores
- Sore throat
- Skin infections
Causes:
- Viral, bacterial, or fungal infections
- Autoimmune diseases
- Certain medications
- Nutrient deficiencies (vitamin B12, folate, copper)
- Bone marrow disorders
- Chemotherapy and radiation
- Physical or psychological stress
- Metabolic dysfunction
Healthspan Impacts:
High Absolute Neutrophil Levels (Neutrophilia)
Elevated neutrophil levels usually indicate that the body is responding to infection, inflammation, physical stress, or injury. Symptoms are caused by the underlying infection or injury.
Symptoms:
- Fever
- Fatigue
- Weakness
- Faint or lightheaded
- Sores that don’t heal
- Swollen or painful joints
Causes:
- Infection and inflammation
- Injuries such as a broken bone
- Vasculitis
- Vigorous exercise
- Smoking
Healthspan Impacts:
- Associate with cardiovascular disease
- Linked to higher all-cause mortality3
- Associated with the development and progression of atherosclerosis
- Linked to increased stroke risk
How Hone Treats Out of Range Absolute Neutrophils
Your Hone physician will evaluate absolute neutrophils as part of a Complete Blood Count (CBC) test alongside your other lab values, symptoms, and overall health. From there, they determine the root cause and create a personalized treatment plan that may include medications, supplements, and lifestyle changes.
- Growth factors* – to boost white blood cell production
- Antibiotics or antifungals* – to treat active infections
- Corticosteroids* – to manage neutrophil-destroying autoimmune conditions
- Treatment of underlying cause* – medications that address autoimmune or bone marrow disorders
Note: *Your Hone Physician does not prescribe these treatments but will recommend further evaluation and help coordinate care with your primary care provider when medical treatment is indicated.
- Prioritize quality sleep (around 7-8 hours a night)
- Get adequate protein intake (0.8 grams of protein per kilogram of body weight per day)
- Get regular moderate exercise
- Consume a low-inflammatory diet such as the Mediterranean-style diet
- Manage stress
- Quit smoking
Rout P, Reynolds SB, Zito PM. Neutropenia. (2024). National Library of Medicine.
↑Na, S.J. et al. (2022). Clinical Characteristics and Outcomes of Neutropenic Sepsis: A Multicenter Cohort Study. Shock.
↑Xie, R., et al. (2024). Higher Circulating Neutrophil Counts Is Associated with Increased Risk of All-Cause Mortality and Cardiovascular Disease in Patients with Diabetic Kidney Disease. Biomedicines.
↑Carr, A. C., & Maggini, S. (2017). Vitamin C and Immune Function. Nutrients.
↑Cheng, J., Rink, L., & Wessels, I. (2024). Zinc Supplementation Reduces the Formation of Neutrophil Extracellular Traps by Decreasing the Expression of Peptidyl Arginine Deiminase 4. Molecular nutrition & food research.
↑Saito, S., et al. (2022). Creatine supplementation enhances immunological function of neutrophils by increasing cellular adenosine triphosphate. Bioscience of Microbiota, Food and Health.
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Reviewed for Accuracy by Our Medical Review Board
This biomarker information has been reviewed by a member of Hone’s medical review board. As part of the medical review team, physicians fact-check this content against the latest research and their own experience treating their patients.
Ashley Winter, M.D., is a board-certified urogynecologist trained at Weill Cornell and Cleveland Clinic. She specializes in female and male sexual dysfunction, urinary issues, genital pain, and hormone therapy.
James Staheli, D.O., is the Medical Director for Broad Health, Hone Health’s affiliated medical practice and a family medicine doctor in Atlanta, Georgia.
