# Absolute Neutrophil Count (ANC) Calculator Calculate the Absolute Neutrophil Count (ANC) = WBC × (segmented % + band %) / 100. Unit selectable: cells/µL or ×10⁹/L (1 ×10⁹/L = 1000 cells/µL). Adult reference ≥ 1500 cells/µL. Neutropenia risk strata: mild 1000–1500, moderate 500–1000, severe < 500 (agranulocytosis < 200) — high risk of serious infection, and febrile neutropenia is a medical emergency. Clinical uses: chemotherapy cycles typically require ANC ≥ 1500 to proceed and ≥ 500 for discharge from protective isolation; carbimazole/clozapine monitoring; congenital neutropenia workup. Neutrophilia > 7500 suggests bacterial infection, inflammation, steroids, or a myeloproliferative neoplasm. If only segmented % is reported, set band % to 0; if the instrument reports an absolute neutrophil count directly (NE#), this tool is not needed. Based on ASCO/IDSA neutropenia guidance, Boxer ASH 2012, and MDCalc. Not medical advice. > Canonical page: https://elysiatools.com/en/tools/absolute-neutrophil-count - **Category:** Health - **Keywords:** absolute neutrophil count, ANC, neutropenia, agranulocytosis, febrile neutropenia, chemotherapy, clozapine, wbc, bands, seg neutrophils, hematology, oncology ## Overview The Absolute Neutrophil Count (ANC) Calculator estimates ANC from the WBC count, segmented neutrophil percentage, and band neutrophil percentage. Choose cells/µL or ×10⁹/L to receive the ANC, unit, and neutropenia category. This tool is for reference only and is not medical advice. ## Inputs - **WBC Unit** (select): WBC reporting unit. ANC is reported in the same unit. - **WBC Count** (number): Total white blood cell count. cells/µL or ×10⁹/L per the unit selected above. - **Segmented Neutrophils %** (number): Percent segmented (mature) neutrophils from the differential (0–100). - **Band Neutrophils %** (number): Percent band neutrophils from the differential (0–100). Enter 0 if not separately reported. - **Decimal Places** (number) ## When to use - Estimate ANC when a complete blood count reports WBC, segmented neutrophils, and bands as percentages. - Review neutropenia severity during chemotherapy monitoring or evaluation of low neutrophil counts. - Use band neutrophils of 0 when the laboratory report lists only the segmented neutrophil percentage. ## How it works - Select the WBC reporting unit: cells/µL or ×10⁹/L. - Enter the total WBC count and segmented neutrophil percentage. - Enter the band neutrophil percentage, or leave it at 0 if bands are not separately reported. - The calculator applies ANC = WBC × (segmented % + band %) / 100 and returns the ANC category. ## Use cases - Check ANC values before or during chemotherapy cycles. - Assess neutropenia risk when reviewing WBC differential results. - Support monitoring related to carbimazole, clozapine, or congenital neutropenia evaluation. ## Frequently asked questions ### What is the ANC formula? ANC = WBC × (segmented neutrophil % + band neutrophil %) / 100. ### Which WBC units can I use? You can enter WBC in cells/µL or ×10⁹/L. The ANC is reported in the same unit. ### What should I enter if bands are not reported? Enter 0 for band neutrophils when only the segmented percentage is provided. ### What do the ANC categories mean? Mild neutropenia is 1000–1500 cells/µL, moderate is 500–1000, and severe is below 500. Values below 200 indicate agranulocytosis. ### Do I need this calculator if my report includes NE#? No. NE# is an instrument-reported absolute neutrophil count, so a separate calculation is not needed. ## Related tools - [Serum Anion Gap (AG) Calculator](https://elysiatools.com/en/tools/anion-gap-calculator): Calculate the serum Anion Gap (AG) to classify metabolic acidosis. Standard formula AG = Na⁺ − Cl⁻ − HCO₃⁻ (mmol/L), or AG = Na⁺ + K⁺ − Cl⁻ − HCO₃⁻ with optional potassium. 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