The presentation delves into food sensitivity testing, focusing on YorkTest's pioneering food-specific IgG tests since 1998. Distinguishing food sensitivities from allergies, it explains IgG's involvement, emphasising delayed reactions and prevalence worldwide. YorkTest's ELISA technology analyses IgG reactions to 200+ ingredients, guiding individuals in dietary changes for improved health. Extensive studies support efficacy, with benefits seen within weeks. The presentation stresses the importance of their unique blood collection method and quality standards, concluding with potential research areas and significant case studies.