Eosinophils (abs.)
Eosinophils are a white blood cell subtype active in allergic reactions and defense against parasites. The absolute count tells how many are circulating.
| Rating | Range | What it means |
|---|---|---|
| Good | below 0.5 10^9/L | Within the reference range. |
| Talk to a doctor | 0.5 10^9/L and above | Elevated — allergy/parasite; interpret in context. |
Why it matters
Elevated with allergies/parasites.
If it’s low
Low eosinophils are mostly insignificant (possible with acute stress or steroids).
If it’s high
Elevated eosinophils often accompany allergies (hay fever, asthma, eczema), drug reactions or parasitic infections.
What to do
Read it in the context of allergic symptoms and the overall picture. A mild rise with allergy is common.
Read together with
IgE (total) · Leukocytes (WBC)
Part of the guide: Complete blood count (CBC) →
Articles about this marker
- High eosinophils: what a raised (or low) count meansComplete blood count (CBC)
- White blood cell differential: what each type of white cell meansComplete blood count (CBC)
This content is for information only and is not a substitute for medical advice. Talk to your doctor about your results.
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