An eosinophil count is a blood test that measures the number of eosinophils, a type of white blood cell, in your blood. Eosinophils play a crucial role in fighting parasites, allergens, bacteria, and other foreign organisms.
Here's a breakdown of what this blood test reveals:
- Normal Eosinophil Count: A normal eosinophil count usually ranges from 1-5% of your total white blood cell count.
- High Eosinophil Count (Eosinophilia): A high eosinophil count can indicate various conditions, including:
- Allergies: Eosinophils are often elevated in people with allergies, asthma, and eczema.
- Parasitic Infections: These infections trigger an increase in eosinophils to fight the parasites.
- Inflammatory Conditions: Some inflammatory conditions, like eosinophilic esophagitis (EoE), can lead to high eosinophil counts.
- Certain Cancers: Rarely, a high count can be linked to certain types of cancer.
- Low Eosinophil Count: A low eosinophil count is less common and may indicate issues with the immune system or bone marrow.
This test is typically ordered as part of a complete blood count (CBC) with a differential white blood cell count. The results can help doctors diagnose various conditions and monitor their effectiveness.
