Food Allergy Testing

Vancouver, BC

Food Antibody Profiles

The incidence of food allergies has increased dramatically over the years, and it is estimated that up to 20% of the population have adverse reactions to foods. The Meridian Valley Lab IgG Food Profile helps identify those with true immune-mediated allergies versus food intolerance. It measures IgG antibody levels to 95 foods and Total IgE. The IgE Food Profile measures quantitative IgE antibody levels to the most common types of dietary allergens. Additional tests are also available for Vegetables and Spices. The cost of this test is $300.

The Consequences of Food Allergies

Increased total antigenic load related to food and environmental sensitivities has been associated with a wide range of medical conditions affecting virtually every part of the body. Even mood and behavior, including hyperactivity disorders in children, are profoundly influenced by food allergies. Symptoms can range from mildly uncomfortable to severe and may include: •Asthma •Migraine •Eczema •Urticaria •Arthritis •Ear infections •Sinusitis •Colitis

IgE vs. IgG Mediated Allergens

Classical skin testing for allergies such as skin-scratch testing, only measures IgE-mediated reactions and provides no information concerning delayed IgG hypersensitivity reactions. Assessment of relative IgG antibody levels to a multitude of foods using sensitive Enzyme-Linked Immunosorbent Assay (ELISA) technology identifies those foods against which the patient is producing antibodies. Measuring both relative IgE and IgG antibody levels provides an invaluable starting point for dietary intervention. The key differences between IgE and IgG mediated allergies are summarized below: IgE Mediated Allergies Immediate onset (within minutes) Circulating half life of 1-2 days Permanent allergies Stimulates histamine release Includes foods, inhalants & molds IgG Mediated Allergies Delayed onset (4-72 hours) Circulating half life of 21 days Temporary allergies Stimulates histamine release Includes foods, herbs &


Allergy Treatment

Low dose allergy immunotherapy (LDA/LDI) is the therapy we utilize to address food and inhalant allergies. This therapy involves the injection of a small dose of the allergy under the skin which acts to desensitize patients to their allergies. These shots are typically administered in 7-8 weeks.