ANC Calculator — Absolute Neutrophil Count
Calculate absolute neutrophil count to assess infection risk and diagnose neutropenia
Calculate Absolute Neutrophil Count
Normal range: 4.0-11.0 ×10³/μL
Mature neutrophils (40-70%)
Immature neutrophils (0-5%)
ANC Results
Formula used: ANC = WBC × (Segs% + Bands%) ÷ 100
Calculation: 0 × (0 + 0) ÷ 100 = 0 cells/μL
Normal range: 2,000-8,000 cells/μL
Clinical Interpretation
Enter values to calculate ANC
Risk Assessment: No calculation
⚠️ Medical Disclaimer: This calculator is for educational purposes only and should not replace professional medical advice. ANC values require clinical correlation and professional interpretation. Seek immediate medical attention for severe neutropenia.
Clinical Significance
Example Calculation
Patient with Mild Neutropenia
White Blood Cells: 6.0 ×10³/μL (normal range)
Neutrophil Segments: 30% (slightly low)
Neutrophil Bands: 3% (normal)
Total Neutrophil %: 30% + 3% = 33%
ANC Calculation
ANC = WBC × (Segs% + Bands%) ÷ 100
ANC = 6.0 × (30 + 3) ÷ 100
ANC = 6.0 × 33 ÷ 100
ANC = 1,980 cells/μL (Category 0 - Normal)
ANC Risk Categories
≥2000 cells/μL
Normal range
No increased infection risk
1500-2000
Borderline low
Monitor closely
1000-1500
Mild neutropenia
Increased infection risk
500-1000
Moderate neutropenia
Significant infection risk
<500
Severe neutropenia
Life-threatening risk
Neutrophil Types
Segments (Segs)
Mature neutrophils (40-70%)
Bands
Immature neutrophils (0-5%)
WBC Count
Total white blood cells
Left Shift: Increased bands indicate active infection or inflammation
Understanding Absolute Neutrophil Count (ANC)
What are Neutrophils?
Neutrophils are the most abundant type of white blood cells and are the first line of defense against bacterial infections. They are produced in bone marrow and circulate in the bloodstream, ready to migrate to sites of infection where they engulf and destroy bacteria through phagocytosis.
Clinical Importance of ANC
- •Assess infection risk in immunocompromised patients
- •Monitor patients undergoing chemotherapy
- •Diagnose and classify neutropenia
- •Guide antibiotic prophylaxis decisions
Causes of Neutropenia
Decreased Production
- • Chemotherapy and radiation
- • Bone marrow disorders
- • Vitamin B12/folate deficiency
- • Certain medications
Increased Destruction
- • Autoimmune disorders
- • Hypersplenism
- • Viral infections (HIV, EBV)
- • Severe bacterial infections