🦠 Absolute Neutrophil Count (ANC)
Calculate the absolute neutrophil count (ANC) to grade neutropenia and infection risk.
Absolute Neutrophil Count (ANC)
WBC count (×10⁹/L)
Segmented neutrophils (%)
Band neutrophils (%)
When to use
Assess infection risk and febrile neutropenia.
How it works
ANC = WBC × (segmented neutrophils% + bands%) / 100. < 1.5 mild, < 1.0 moderate, < 0.5 severe (×10⁹/L).
Key points
- Severe neutropenia (< 0.5) with fever is an emergency.
- Start empirical antibiotics promptly in febrile neutropenia.
- Include band forms in the calculation.
References
Decision support for licensed clinicians only; not a substitute for clinical judgement, diagnosis or local protocols.