8 doctors weighed in:

Is there an DNA test to detect a wheat allergy?

8 doctors weighed in
Dr. Steven Machtinger
Internal Medicine - Allergy & Immunology
3 doctors agree

In brief: No

At least, not yet.
There are other ways to detect wheat allergy. This involves identifying the presence of ige antibodies specific for wheat. This can be accomplished with skin testing or a blood test called rast. Both tests are good - neither is superior to the other; they complement each other. Studies show that IgG antibodies indicate protection against wheat & other food allergies.

In brief: No

At least, not yet.
There are other ways to detect wheat allergy. This involves identifying the presence of ige antibodies specific for wheat. This can be accomplished with skin testing or a blood test called rast. Both tests are good - neither is superior to the other; they complement each other. Studies show that IgG antibodies indicate protection against wheat & other food allergies.
Dr. Steven Machtinger
Dr. Steven Machtinger
Thank
Dr. Albert Pizzo
Family Medicine
2 doctors agree

In brief: Wheat allergy

There are several types of blood tests and also skin tests that allergist do to diagnosis wheat allergy.

In brief: Wheat allergy

There are several types of blood tests and also skin tests that allergist do to diagnosis wheat allergy.
Dr. Albert Pizzo
Dr. Albert Pizzo
Thank
2 comments
Dr. Irwin Berkowitz
No DNA tests. Also allergy testing via blood or skin testing may give many false positive results. If a patient is eating wheat products without a problem then the testing is worthless. The ultimate diagnostic test is a food challenge.
Dr. Michael P Vaughn
Dr. Berkowitz has made a very important point that many physicians do not understand. The diagnosis of food allergy cannot be made solely by detecting the presence of allergic antibody (igE) by blood test or skin test. Food allergy is only present if consumption of the food leads to allergic symptoms. Persons who have elevated IgE to wheat but can eat it without problems are not allergic to wheat
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