IgE
An allergy blood test measures the amount of allergy-causing antibodies called immunoglobulin E (IgE). Antibodies are proteins that your immune system makes to fight foreign substances, such as viruses and bacteria. But your immune system may also make them in response to allergens. These are harmless substances, such as pollen and peanuts, that may cause an allergic reaction in some people.
Allergy blood tests are used to help find out if you have an allergy.
Source: MedlinePlus, U.S. National Library of Medicine
Normal range
Result tiers from clinical guidelines — not a single normal band.
What an abnormal result can be associated with
- A high result
- Increased circulating IgE concentration
- A low result
- Decreased circulating IgE concentration
Associations from LOINC2HPO (Human Phenotype Ontology). This is reference information, not a diagnosis — only a clinician can interpret your result in context.
Details
- Sample
- Serum or plasma · LOINC
- Part of
- Core respiratory allergens panel
- Listed under
- Allergy · Food Allergy · Hay Fever
- Code
- LOINC 19113-0 · IU/mL
- Also known as
- Immune globulin E, Immunoglobulin E