The Canadian Modern society of Allergy and Clinical Immunology (CSACI) may be very concerned about the greater promoting of foodstuff-certain immunoglobulin G (IgG) tests to most people over the past several years, supposedly as a simple means by which to establish “foodstuff sensitivity”, foods intolerance or food items allergic reactions. https://www.directivepublications.org/allergy-and-clinical-immunology/