Total IgE

Allergy · also printed as IgE, Total IgE, IgE total, Serum IgE, Immunoglobulin E

Typical UK adult rangebelow 100 kU/L

Below 100 kU/L is typical in adults; children have age-specific ranges.

What this test measures

IgE is the antibody involved in allergic reactions. Total IgE measures all of it, whatever it is directed against, so it is a general marker of an allergic tendency rather than of any one allergy.

Why doctors request it

Requested in asthma, eczema, hay fever and suspected allergy, and needed before some asthma injections.

What commonly pushes it up

Allergic conditions such as eczema, asthma and hay fever
Parasite infections
Some immune conditions
Smoking, slightly

What commonly pushes it down

There is no meaningful low value

Everyday reasons for a value outside the range

Many people with definite allergies have a normal total IgE, and many without allergies have a raised one
Ranges are age-dependent in children

About the sample

No fasting needed.

Written by a UK consultant physician. Typical UK adult reference ranges; your laboratory's own printed range takes precedence.

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This is an educational summary of results you uploaded. It is not medical advice, a diagnosis or a treatment plan, and it does not replace the doctor who requested the test. If you are worried, or a result is marked outside range, discuss it with your doctor. Written and reviewed by a UK consultant physician. Reference ranges vary between laboratories.