Immunoglobulin E: normal range and what it means
An antibody tied to allergies and parasitic responses.
Normal range
Adult reference range.
- Normal< 100 IU/mL
- Elevated100 – 200 IU/mL
- High≥ 200 IU/mL
What it measures
The antibody behind immediate allergic reactions. A raised total level suggests an allergic tendency but does not say what you react to.
What moves it
Allergy, asthma, eczema and parasitic infection. Tends to be higher in people with allergic conditions generally.
How to bring it into range
Specific IgE testing or skin-prick testing identifies the trigger. The total alone rarely changes what anyone does.
How fast it responds
Months.
Also reported as: ige · total ige
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Common questions
- What is a normal Immunoglobulin E level?
- Normal: < 100 IU/mL. Adult reference range.
- What does a high Immunoglobulin E mean?
- A value above the reference band means Immunoglobulin E is outside the range typical for a healthy adult. A single reading is rarely conclusive on its own — what matters is the trend across draws and the other markers around it, which is why HealthOS reads the whole panel together rather than one number at a time.
- How do I improve my Immunoglobulin E?
- Specific IgE testing or skin-prick testing identifies the trigger. The total alone rarely changes what anyone does.
More in Immunity & Other
Reference ranges are general-population guidance compiled from common clinical laboratories, not a diagnosis. Lab-to-lab ranges differ. Always read your results with your doctor.