Why does the Food Sensitivity Test measure 96 or 204 foods but the Food Allergy Test measures nine?

Food sensitivity testing and food allergy testing measure different antibody responses to foods in your diet. 

Food sensitivity testing shows immunoglobulin G (IgG) reactivity to 96 food allergens. IgG antibody responses are generally more delayed and difficult to tie to a specific food. Your test results can help you prioritize which foods in your diet to consider first for a two-part elimination diet, which may help identify foods that are connected to unwanted symptoms.

The Food Allergy Test measures IgE antibody response to fewer foods but targets some of the most common food allergens. Screening for wide varieties of food allergens, without looking at symptoms shortly after ingesting the possible allergen, may not be helpful in IgE food allergy diagnosis. The Food Allergy Test is one tool that your healthcare provider can use to help determine if you have a food allergy. The results of the Food Allergy Test should not be used to guide any kind of dietary changes without first sharing your results with a healthcare provider. For example, if you have been avoiding a specific food, you should not reintroduce that food based on these results. An allergy specialist or your healthcare provider can review your results, along with your medical history and symptoms, and help create a plan that’s right for you.