What are Monocytes (%)?
Monocytes are large white blood cells produced in the bone marrow. After circulating briefly in the bloodstream, they move into tissues where they transform into macrophages, immune cells that engulf pathogens and clear cellular debris so the body can respond more effectively to infection.
Monocyte percentage reflects the share of monocytes relative to other white blood cells. Physicians evaluate the percentage of monocytes alongside the absolute monocyte count (AMC) to get a better picture of your immune health.
- If monocyte percentage is high but the absolute count is normal, it may mean other white blood cell types have decreased.
- If both percentage and absolute count are elevated, it may indicate the immune system is producing more monocytes in response to infection or inflammation.
Why Do Monocytes (%) Matter?
Physicians evaluate the percentage of monocytes in your blood to:
- Detect when the immune system is activated
- Understand the state of the innate immune system, the body’s first line of defense
- Assist in identifying blood and inflammatory disorders
Book your test now
Test 50+ biomarkers & meet with a longevity physician, uncover the root cause of symptoms
- HSA/FSA eligible
- Physician reviewed
- 100% satisfaction guaranteed
How to Interpret Monocytes (%)
(Ranges may vary slightly by lab)
Standard reference ranges represent the middle 95% of healthy individuals but don’t necessarily reflect levels associated with peak vitality and longevity. Optimal ranges target levels that correlate with enhanced well-being, performance, and disease prevention. They may not reflect optimal immune balance.
What a Healthy Monocyte Percentage Supports
- Efficient recovery from infection or injury
- Lower chronic inflammatory burden
- Balanced immune response
- Improved cardiovascular health
- Improved metabolic health
Know your numbers. Own your health.
50+ biomarkers that reflect how your body is functioning — and where there’s room to optimize. Plus a clinical consult and personalized treatment plan. All for $65.
Low Monocytes (%) Levels
Low monocyte percentage usually reflects a condition affecting the immune system. Symptoms are caused by the underlying infection or condition.
Symptoms:
- Slow wound healing
- Recurring or lingering infections
- Persistent or severe fatigue and weakness
- Fever
- Night sweats
- Swollen lymph nodes
- Dizziness and pale skin (symptoms of anemia)
Causes:
- Medications (e.g., long-term steroid use; radiation or chemotherapy)
- Anemia
- Bone marrow suppression
- Severe infections
- Blood cancers (rare)
- Immune suppression states
Healthspan Impacts:
- Associated with age-related inflammation
- Increased risk of recurring infections
- Impaired tissue repair and delayed healing
- Poorer outcomes in acute illness
High Monocytes (%) Levels
High monocyte percentage suggests the immune system is responding to inflammation, infection, or metabolic dysfunction. Symptoms are caused by the underlying condition, not monocytes themselves.
Symptoms:
- Fatigue
- Muscle aches
- Weakness
- Fever
- Swelling
- Joint pain
- Night sweats
Causes:
- Chronic inflammatory diseases (IBD)
- Chronic infections
- Autoimmune diseases
- Acute stress or injury
- Smoking
- Pregnancy
- Medications (corticosteroids)
Healthspan Impacts:
- Increased risk and progression of atherosclerosis (clogged arteries)
- Associated with higher plaque formation and progression, which can lead to atherosclerosis and vascular problems
- Linked to an increased risk of chronic stress1
How Hone Treats Out of Range Monocytes (%)
Your Hone physician will evaluate lab results for a normal monocyte percentage alongside absolute monocyte count and other markers in a complete blood count (CBC). They’ll also consider symptoms, recent illness, medications, and overall health before creating a personalized treatment plan.
- Hormone replacement therapy – when clinically indicated, to address hormone deficiency and support overall inflammatory and metabolic health
- Antivirals or antibiotics* — to treat active infections driving elevated monocyte levels
- Corticosteroids* — to manage autoimmune conditions
- Treatment of underlying cause* — to address autoimmunity, bone marrow problems, or hematologic 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.
- Reduce consumption of saturated fats and salt6,7
- Participate in regular moderate-intensity exercise
- Get at least 7-8 hours of quality sleep per night
- Manage stress
Wohleb, E. S., et al. (2015). Monocyte trafficking to the brain with stress and inflammation: A novel axis of immune-to-brain communication that influences mood and behavior. Frontiers in Neuroscience.
↑Zhang, Y., et al. (2012). Vitamin D Inhibits Monocyte/macrophage Pro-inflammatory Cytokine Production by Targeting Mitogen-Activated Protein Kinase Phosphatase 1. Journal of Immunology.
↑Vasamsetti, S. B., et al. (2016). Resveratrol attenuates monocyte-to-macrophage differentiation and associated inflammation via modulation of intracellular GSH homeostasis: Relevance in atherosclerosis. Free Radical Biology and Medicine.
↑Carpenter KC, et al. (2012). Baker’s yeast β-glucan supplementation increases monocytes and cytokines post-exercise: implications for infection risk? British Journal of Nutrition.
↑Mikkelsen, K., et al. (2023). High-Dose Vitamin B6 (Pyridoxine) Displays Strong Anti-Inflammatory Properties in Lipopolysaccharide-Stimulated Monocytes. Biomedicines.
↑Lian, Z., et al. (2023). Dietary Effects on Monocyte Phenotypes in Subjects With Hypertriglyceridemia and Metabolic Syndrome. JACC: Basic to Translational Science.
↑Zhou, X., et al. (2013). Variation in Dietary Salt Intake Induces Coordinated Dynamics of Monocyte Subsets and Monocyte-Platelet Aggregates in Humans: Implications in End Organ Inflammation. PLoS ONE.
↑
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.
