Absolute Eosinophil Count Calculator
Calculate the absolute eosinophil count from complete blood count results
Calculate Absolute Eosinophil Count
Normal range: 4,000-11,000 cells/μL
Normal range: 1-4% of total WBC count
Formula:
AEC = WBC × EOS%
Example Calculation
Given: WBC = 9,000 cells/μL, Eosinophils = 5%
Calculation: AEC = 9,000 × 0.05 = 450 cells/μL = 0.45 × 10³ cells/μL
Interpretation: Upper limit of normal range
Common Clinical Conditions
Eosinophilia Causes
Allergic Conditions:
- • Bronchial asthma
- • Atopic dermatitis
- • Allergic rhinitis
- • Food allergies
Infections:
- • Parasitic infections
- • Helminthic infestations
- • Fungal infections
Medications:
- • Antibiotics
- • Anticonvulsants
- • Sulfonamides
Other Causes:
- • Autoimmune disorders
- • Malignancies
- • Hypereosinophilic syndrome
Eosinopenia Causes
• Acute bacterial infections
• Corticosteroid therapy
• Severe stress or burns
• Cushing's syndrome
• Alcohol abuse
Reference Ranges
Normal Range
0.04 - 0.45 × 10³ cells/μL
1-4% of total WBC
Eosinophilia
> 0.45 × 10³ cells/μL
May indicate allergies
Hypereosinophilia
> 1.5 × 10³ cells/μL
Requires investigation
About Eosinophils
Function
White blood cells specialized in fighting parasites and mediating allergic responses
Origin
Named "acidophils" due to their affinity for acidic dyes like eosin
Clinical Significance
Used as markers for asthma severity and allergic disease monitoring
Units Conversion
When to Test AEC
Suspected Allergies
- • Asthma evaluation
- • Atopic dermatitis
- • Drug allergies
Parasitic Infections
- • Tropical travel history
- • Unexplained eosinophilia
- • Helminth screening
Routine Monitoring
- • Complete blood count
- • Drug therapy monitoring
- • Disease progression
Understanding Absolute Eosinophil Count
What is AEC?
The Absolute Eosinophil Count (AEC) is a laboratory test that measures the actual number of eosinophil white blood cells in a blood sample. Unlike the percentage of eosinophils in a differential count, the AEC provides the absolute number per unit volume of blood.
Clinical Importance
- •Diagnoses and monitors allergic conditions like asthma
- •Detects parasitic infections, especially helminths
- •Monitors drug reactions and hypersensitivity
- •Evaluates hypereosinophilic syndrome
Calculation Method
Formula
AEC = WBC Count × Eosinophil %
Required Values
- • Total WBC count (from CBC)
- • Eosinophil percentage (from differential)
Result Units
Usually expressed as × 10³ cells/μL or cells/μL