Many people are susceptible to food allergies and there are hundreds of food allergens that need to be tested. One more common thing in food allergy is cross-reactivity, which means that if a person is hypersensitive to one allergen, they may also be allergic to other allergens in its class. Therefore, food allergy testing is usually done in panels instead of testing for individual allergens. Common allergens included in the Oil Panel are mustard seed, rapeseed, peanut, soybean, coconut and olive among others. Specific immunoglobulin E (IgE) blood test is conducted to check if the person is allergic to the allergens included in the panel.