Hematology
Eosinophils
The share of your white cells involved in allergic responses and in the reaction to parasites.
Unit %Typical adult range 0–6 %
What it is
The share of your white cells involved in allergic responses and in the reaction to parasites.
Why it matters
It is the count that quietly tracks allergy, asthma and eczema, and it is the one that rises in a parasitic infection.
Reading the number
A percentage of a small fraction, so a couple of points is noise. Values are lowest in the morning and rise overnight, and a steroid dose flattens them to near zero.
What moves it
allergy seasonasthmasteroid medicationtime of dayparasitic infection
Read alongside
When to raise it
Worth discussing a value that stays clearly raised outside allergy season.
Also known as
On a report in another language.
A lab report names this analyte in its own language. Vitals Vault recognises each of these and files them all under Eosinophils.
EosinófilosEosinofiilidEosinophile
Catalog entry last updated 2026-08-27. Browse all 165 metrics.