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.

Source	Sex	Age	Range
American Board of Internal Medicine (Laboratory Test Reference Ranges)	All	all ages	<380 IU/mL
ARUP Laboratories Test Directory	All	≤ 5 mo	<13 ku/L
ARUP Laboratories Test Directory	All	≤ 5 mo	<13 kU/L
ARUP Laboratories Test Directory	All	6 mo – 1 y	<34 ku/L
ARUP Laboratories Test Directory	All	6 mo – 1 y	<34 kU/L
ARUP Laboratories Test Directory	All	1 y – 2 y	<97 kU/L
ARUP Laboratories Test Directory	All	1 y – 2 y	<97 ku/L
ARUP Laboratories Test Directory	All	3 y	<199 kU/L
ARUP Laboratories Test Directory	All	3 y	<199 ku/L
ARUP Laboratories Test Directory	All	4 y – 6 y	<307 ku/L
ARUP Laboratories Test Directory	All	4 y – 6 y	<307 kU/L
ARUP Laboratories Test Directory	All	7 y – 8 y	<403 kU/L
ARUP Laboratories Test Directory	All	7 y – 8 y	<403 ku/L
ARUP Laboratories Test Directory	All	9 y – 12 y	<696 ku/L
ARUP Laboratories Test Directory	All	9 y – 12 y	<696 kU/L
ARUP Laboratories Test Directory	All	13 y – 15 y	<629 ku/L
ARUP Laboratories Test Directory	All	13 y – 15 y	<629 kU/L
ARUP Laboratories Test Directory	All	16 y – 17 y	<537 kU/L
ARUP Laboratories Test Directory	All	16 y – 17 y	<537 ku/L
ARUP Laboratories Test Directory	All	18 y+	<214 kU/L
ARUP Laboratories Test Directory	All	18 y+	<214 ku/L
Mayo Clinic Laboratories (Pediatric Test Catalog)	All	≤ 5 mo	<13 ku/L
Mayo Clinic Laboratories (Pediatric Test Catalog)	All	6 mo – 11 mo	<34 ku/L
Mayo Clinic Laboratories (Pediatric Test Catalog)	All	3 y	<199 ku/L
Mayo Clinic Laboratories (Pediatric Test Catalog)	All	4 y – 6 y	<307 ku/L
Mayo Clinic Laboratories (Pediatric Test Catalog)	All	9 y – 12 y	<696 ku/L
Mayo Clinic Laboratories (Pediatric Test Catalog)	All	13 y – 15 y	<629 ku/L
Mayo Clinic Laboratories (Pediatric Test Catalog)	All	18 y+	<214 ku/L

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

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