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Clinical — Haematology
ANC Calculator
Enter the white cell count and the neutrophil and band percentages to get the absolute neutrophil count, with grading.
Absolute neutrophil count
—
Neutrophils per microlitre.
| Interpretation | — |
|---|---|
| Granulocytes counted | — |
| White cell count | — |
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How the ANC Calculator Works
The absolute neutrophil count (ANC) is the true number of neutrophils per microlitre of blood — the white cells that fight bacterial infection. It is the white cell count multiplied by the percentage of neutrophils, which includes both mature segmented neutrophils and immature bands, divided by 100.
Enter the white cell count and the neutrophil and band percentages from a differential. A low ANC (neutropenia) increases infection risk and is graded from mild to severe; it is watched closely during chemotherapy.
ANC = WBC × (% neutrophils + % bands) ÷ 100
Frequently Asked Questions
What is a normal ANC?
An ANC of 1,500/µL or above is generally normal. Below that is neutropenia: mild (1,000–1,500), moderate (500–1,000) and severe (under 500), with severe carrying the highest infection risk.
Do I include bands in the ANC?
Yes. The ANC uses the total of segmented (mature) neutrophils and bands (immature neutrophils). Both are counted because both contribute to fighting bacterial infection.
Why does ANC matter in chemotherapy?
Chemotherapy can suppress neutrophil production, and a low ANC leaves patients vulnerable to serious infection. The ANC guides decisions about treatment timing, precautions and growth-factor support.
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