Eosinophils (Absolute)
Learn absolute Eosinophils count for allergy and parasite response evaluation. Monitor immune system activity patterns effectively.
What is Eosinophils (Absolute)?
Eosinophils (absolute) measures the actual number of eosinophils per microliter of blood. These specialized white blood cells contain granules filled with proteins that combat parasitic infections and mediate allergic responses. The absolute count provides more precise information than percentages, especially when total white cell counts are abnormal.
Why is it Tested?
Doctors order absolute eosinophil counts to diagnose and monitor allergic diseases, parasitic infections, asthma severity, and certain autoimmune conditions. The absolute count is particularly valuable for tracking treatment response in eosinophilic disorders and determining the severity of allergic reactions.
Normal Ranges
Reference ranges vary by lab, but general adult guidelines:
- Adults: 0.05–0.5 × 10³/µL
Normal absolute eosinophil counts reflect the balance between production in bone marrow and migration to tissues where these cells perform their protective functions.
Reference ranges vary by authority. Track yours across multiple standards with automatic unit conversions in LabsVault.
What do Abnormal Results Mean?
Abnormal results are not a diagnosis. Always discuss your results with a qualified healthcare provider before making any medical decisions.
Low Eosinophils
Low absolute eosinophil counts may result from:
- Acute stress or severe infections
- Corticosteroid therapy
- Cushing’s syndrome
- Acute bacterial infections (redistribution to tissues)
High Eosinophils
Elevated absolute eosinophil counts (eosinophilia) commonly indicate:
- Allergic diseases (asthma, atopic dermatitis)
- Parasitic infections (especially helminth infections)
- Drug allergies or adverse reactions
- Eosinophilic esophagitis or gastroenteritis
- Hypereosinophilic syndrome
- Certain cancers
How to Track Over Time
Tracking absolute eosinophil counts provides objective measurements for monitoring allergic disease activity and treatment effectiveness. Persistent elevation above 1.5 × 10³/µL warrants investigation for underlying causes, while trending patterns help guide long-term management of eosinophilic disorders.
Track your Eosinophils (Absolute) results over time
Upload your lab PDFs and see trends automatically.