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Neutrophil Count

⚠️ Update approaching🔬 Evidence: LimitedInternal Medicine
Diğer adları: Absolute neutrophil count, ANC, Neutrophil count
⚠️

Discuss your test results with your doctor. This page is for informational purposes only and does not provide a diagnosis.

⚡ Key Facts

• The most abundant white blood cell subtype — first-line defense against bacterial infection • Normal: 2,000–7,000/µL • Low counts (neutropenia) increase infection risk • May rise with stress, infection, and certain medications

🧪 What Does This Test Measure?

The neutrophil count measures the most abundant white blood cell subtype, which serves as the body's first-line defense against bacterial infections.

📋 Why Is It Ordered?

Ordered for bacterial infection evaluation, post-chemotherapy bone marrow recovery monitoring, and neutropenia investigation.

🔧 Preparation

No special preparation is required. Part of the CBC. Intense exercise and stress may transiently elevate counts.

📊 Reference Ranges

Normal: 2,000–7,000/µL (2.0–7.0 × 10⁹/L) Mild neutropenia: 1,000–1,500/µL Moderate: 500–1,000/µL Severe: <500/µL ⚠️ Benign ethnic neutropenia is common in some populations.

⬆️ High Values

Elevated neutrophils may be associated with bacterial infection, acute stress, inflammation, tissue damage, corticosteroid use, or smoking.

⬇️ Low Values

Low neutrophils (neutropenia) may be associated with chemotherapy, medications, viral infections, autoimmune conditions, or benign ethnic neutropenia.

⚙️ What Can Affect Results?

Corticosteroids, infection, stress, exercise, smoking, pregnancy, ethnicity, and daily variation may affect neutrophil counts.

🔬 Evidence Summary

Limited evidence: 4 reviews.

📚 Most Important Studies on This Topic

1

How I manage inpatient consultations for quantitative neutrophil abnormalities in adults

Review· Blood · 2023 · PMID: 36279420

2

Evaluation of Patients with Leukocytosis

Review· American Family Physician · 2015 · PMID: 26760415

3

Neutropenia: etiology and pathogenesis

Review· Clinical Cornerstone · 2006 · PMID: 17379162

✅ Key Takeaways

💡

What you learned: Neutrophils are the primary defense against bacterial infection. Low counts require careful evaluation for infection risk.

⛔

A neutrophil count alone cannot diagnose infection or bone marrow disease. Clinical context and additional tests are needed.

🔬 Sources Used on This Page

4 sources · Most recent publication: 2023
📖
Review
Comprehensive topic evaluation
4
sources
Overall assessment: Evidence level for this topic is limited. This page is supported by 4 reviews.

📝 Questions to Ask Your Doctor

Be prepared for your appointment. Add questions to your list.

📋 References

[PMID: 36279420] How I manage inpatient consultations for quantitative neutrophil abnormalities in adults. Blood, 2023.
[PMID: 26760415] Evaluation of Patients with Leukocytosis. American Family Physician, 2015.
[PMID: 17379162] Neutropenia: etiology and pathogenesis. Clinical Cornerstone, 2006.
[PMID: 9971870] Acute-phase proteins and other systemic responses to inflammation. New England Journal of Medicine, 1999.
Last reviewed: 4/2/2026
Next review: 4/2/2027

⚖️ Comparisons

Neutrophil vs Lymphocyte→

🔗 Related Topics

🧪 Lökosit / WBC (total beyaz küre sayısı)🧪 Hemogram (tam kan sayımı — genel bakış)🧪 CRP (C-reaktif protein)🧪 Prokalsitonin (bakteriyel enfeksiyon belirteci)🧪 Sedimantasyon (ESR)
⚖️ This page does not replace medical advice. Make treatment decisions with your doctor.
Content is based on scientific studies indexed in PubMed and current clinical guidelines.