Eosinophils are white blood cells that help your body respond to allergies and certain infections.
Eosinophils are white blood cells that respond to allergic reactions and parasite infections. They release substances that help fight parasites but can also drive allergy and asthma symptoms.
This test reports the absolute eosinophil count, the actual number in a set volume of blood, from the differential part of a complete blood count.
A raised eosinophil count often points to allergies, asthma, eczema, a drug reaction, or a parasite infection. Higher levels can also appear in some autoimmune and rarer blood conditions. The count helps explain symptoms like itching, wheeze, or a rash and guides where to look next.
Aniva reads your result against research-backed ranges, not just the lab's wide normal. The reference shown below is specific to this biomarker.
Typical adult range, automated count:
| Measure | Typical range |
|---|---|
| Eosinophils, absolute | 0.02 to 0.5 x10^9/L |
Ranges are guidance only and vary by laboratory and analyser. Read against your lab's own reference range, aligned to German practice (DGKL).
Your result shows whether your eosinophils are typical or raised. Alongside the rest of your blood count it helps flag an allergic tendency, asthma, a possible parasite, or a drug reaction.
Counts vary through the day, often higher at night and lower in the morning. Corticosteroids lower them. Allergy flares, recent infection, and some drugs raise them. Delays before analysis can affect the result.
Best read with the rest of the white cell differential and, when allergy is suspected, with total IgE.
What do eosinophil results mean in plain terms? Higher levels often point to allergies, asthma, or certain infections. Lower levels are commonly seen with stress or steroid use.
Do I need to fast for this test? No. Fasting is not needed. For trends, try to test at a similar time of day.
What can affect my eosinophil count? Steroids, recent illness, stress, exercise, time of day, smoking, pregnancy, and travel exposures can change results.
How often should I check eosinophils? They’re usually checked with a routine CBC or as advised for symptoms or treatment monitoring.
How long do results take? Results are usually ready in about 7 days.
What should I discuss with my clinician? Share allergy and asthma history, medicines (especially steroids), recent travel, pet exposures, and any new rashes or breathing issues.
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