Many people suspect food allergies but are unsure what is actually causing their symptoms. Optimed Immunology evaluates suspected food allergy using detailed history and blood-based testing — providing clear assessment without scratch testing.
Food allergy is often suspected but harder to confirm than patients realize. True food allergy is an IgE-mediated immune response that produces reproducible symptoms after exposure to a specific food. It is distinct from food intolerance, non-IgE-mediated reactions, and the many gastrointestinal conditions that can produce food-related symptoms.
Evaluation at Optimed Immunology is blood-based — using specific IgE testing rather than skin prick testing. Blood-based specific IgE testing can be clinically useful when selected based on history and interpreted by a specialist. Positive results indicate sensitization but do not always mean true clinical allergy, and some cases require referral for skin testing or supervised oral food challenge. Component-resolved diagnostics (testing for specific protein components within a food, such as Ara h 2 in peanut) are added when they help clarify clinical relevance.
A detailed history is the most important diagnostic tool. The pattern of reaction, time course, severity, and consistency across exposures are reviewed in depth. Targeted specific IgE testing is then ordered based on the suspected foods and the differential.
Oral food challenges — supervised re-exposure to confirm or exclude a true allergy — are not performed in this office. Patients who require oral challenges are referred to colleagues who provide that service in an appropriately equipped setting.
Treatment focuses on accurate avoidance of confirmed allergens, prescription of an epinephrine auto-injector with education for patients at risk of anaphylaxis, attention to nutritional considerations for restricted diets, and clear written action plans for reactions. For patients who are appropriate candidates, referral for oral immunotherapy programs is discussed.
A first visit takes a thorough food and reaction history, identifies which specific testing is most appropriate, and reviews any prior testing results. Many patients arrive with broad food allergy panels that have generated confusing results — clarifying those results in the context of clinical history is often the most useful work of the first visit.
Donald L. McNeil, MD · Board Certified in Allergy & Immunology and Internal Medicine
This page is provided for educational purposes and does not substitute for clinical judgment or direct medical advice. Treatment decisions are individualized based on your full history, examination, and laboratory findings. If you have an emergency, call 911.