Skip to content

Wheat-Specific IgE, Serum — Qualitative

Published: August 9, 2026Updated: August 17, 2026

A blood test that detects IgE antibodies to wheat and may help assess suspected wheat allergy or sensitization.

Quick summary

["A positive result suggests an immune response to wheat, but it must be interpreted alongside symptoms and other allergy testing."]

Medically reviewed by WellAlly Editorial TeamLast reviewed August 17, 2026Editorial policy

Key facts at a glance

LOINC
16085-3
Short code
Deprecated Wheat IgE RAST Ql
Synonyms
Deprecated Wheat IgE RAST Ql
Category
liver
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Ref low
10
Ref high
40
Critical range
— – 500 N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
CPT
84484
SNOMED
302774002
Specimen volume
5 mL
Stability
Room temperature: 4h, Refrigerated: 24h, Frozen: 7d
Hemolysis max
500
Lipemia max
1000
Icterus max
500
TAT
4–24 hours
Order
routine

What is this test?

This test measures wheat-specific IgE antibodies in blood. IgE is an immune-system protein that can react to allergens such as wheat.

Why might I need this test?

It may be used to evaluate suspected wheat allergy, particularly when symptoms occur after eating wheat. It is sometimes part of broader allergy testing.

How is the test performed?

A blood sample is collected and analyzed in a laboratory for antibodies directed against wheat. The result is reported as positive or negative for this qualitative test.

How do I prepare for the test?

No special preparation is usually required. Tell your clinician about your symptoms, possible wheat reactions, and any allergy testing you have already had.

Reference range

Adult: 10-40 U/LN/A

Specimen: serum

No special preparation required. Avoid fatty meals before the test if possible.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

A positive result indicates that wheat-specific IgE antibodies are present, which can be consistent with wheat sensitization or allergy. It does not by itself show that wheat is causing your symptoms or indicate the severity of a reaction. Clinical history, skin-prick testing, and other allergy evaluation may be needed.

Short name

Wheat-Specific IgE

Frequently asked questions

Does a positive result mean I have celiac disease?
No. This test looks for an immediate IgE-mediated immune response to wheat, not the antibodies associated with celiac disease. Celiac disease requires separate testing.
Can I have a wheat allergy without a positive result?
Yes. Some allergic reactions may involve immune mechanisms other than IgE, and testing can occasionally be falsely negative. Your clinician should interpret the result with your symptoms and other findings.
Should I stop eating wheat before this test?
Usually not. Unless your clinician gives different instructions, continue your usual diet so that testing can be interpreted in the context of your symptoms and exposures.
  1. 1
    MedlinePlus — Laboratory TestsSource
  2. 2
    Lab Tests OnlineSource
  3. 3
    Mayo Clinic — Tests & ProceduresSource

Click any link to access the full source. PubMed Central (PMC) links provide free full-text access.

This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.

Medical Disclaimer

This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.

If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.

Medically reviewed by WellAlly Editorial Team Last reviewed August 17, 2026. · Read our editorial policy