Absolute Eosinophil Count

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Calculate the AEC (Absolute Eosinophil Count) from a WBC differential.

Complete Blood Count

WBC Count

10³/µL

Eosinophils (%)

Lab Analysis

Absolute Count210cells/µL

Normal AEC

Immunological Profile

Severity Grading

< 500Normal

500 - 1500Mild Eosinophilia

> 1500Moderate/Severe

About this calculator

Overview

The Absolute Eosinophil Count (AEC) is a measure of the actual number of eosinophils per microliter of blood. While the differential percentage provides the relative proportion, the AEC is required for diagnosis of eosinophilia and monitoring treatment response.

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Pro Tips

AEC is more clinically useful than the eosinophil percentage alone.
Check WBC units; most labs report WBC in 10³/µL (cells per cubic millimeter).
Diurnal variation exists; counts are often highest at night and lowest in the morning.

Fun Facts

"A normal AEC is typically between 0 and 500 cells/µL."
"Eosinophilia is often associated with allergic reactions, parasitic infections, or certain malignancies."
"Hypereosinophilic Syndrome (HES) is typically defined as an AEC > 1,500 cells/µL."
"Low eosinophil counts (eosinopenia) can be seen in acute stress or corticosteroid therapy."

Formula: AEC = WBC Count × (Eosinophil % / 100).