An oral food challenge (OFC) is a closely monitored medical test that helps determine whether you or your child react to a food allergen. Often referred to as the gold standard of food allergy testing, it allows Atlanta allergists to observe real-world reactions after the food is eaten in a professional setting. In practice, oral food challenges are only recommended in specific situations. So how do allergists determine when this approach is the best choice?
When Is an Oral Food Challenge Used in Food Allergy Testing?
Compared with skin prick or blood testing, oral food challenges are recommended less often, and are reserved for situations that require closer examination. The following scenarios outline when an OFC may be the right next step.
Food Allergy Testing Is Unclear
Skin prick and blood test results won’t always be clear. For example, some patients will test positive, yet still be able to tolerate the food. An allergist will consider these test results alongside a patient’s medical history, family history and symptoms. However, when results are unclear or there is some confusion about cross-reactive foods, an OFC may be recommended.
History of Mild or Unclear Symptoms
Food allergy symptoms can be unpredictable in that they can present delayed or inconsistent reactions. For some patients, mild and recurring symptoms could indicate a food intolerance rather than a food allergy. When food allergy symptoms are difficult to interpret, an OFC can supply the precise information needed.
Possible Outgrowing of a Known Food Allergy
Some children will outgrow their food allergy before they reach adulthood. However, to safely confirm that the allergy has resolved, it’s necessary to perform an OFC under medical supervision. While some children may be apprehensive about eating the problem food once more, you can follow our tips for preparing your child for a food allergy test to keep them comfortable throughout the process.
Before Starting Oral Immunotherapy Treatment
Oral immunotherapy is a desensitization treatment where patients are gradually exposed to increasing amounts of an allergen to build tolerance over time. Due to the lengthy treatment time, your allergist may recommend an OFC to confirm the allergy diagnosis, and establish a baseline for how much of the allergen a patient can tolerate.
Potential Benefits of Reintroducing the Food
Long-term avoidance of foods can cause anxiety about certain foods and impact nutrition. For example, a person with a specific tree nut allergy may avoid all nuts out of fear of experiencing a severe reaction. Oral challenge food allergy testing can bring needed clarity and potentially increase the dietary options that are available to the patient.
Atlanta Oral Food Challenges for a Food Allergy Diagnosis
Contact us today to discuss an oral food challenge and other vital testing procedures used to diagnose adult and pediatric food allergies. We offer comprehensive allergy testing and treatment services at centers across the Atlanta area. Call (678) 668-4688 or request an appointment.
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