Anti-IgE is added to form a complex and make the antigen visible.22 Performing immunoassay testing for specific IgE to pork, beef and cat serum albumin is recommended to exclude other mammalian meat allergy conditions.16 There is a low titre of beef, pork or lamb sensitisation but high-specific IgE antibodies to alpha-gal. This evidence concerns the gene IGHE and allergic disease.