FoodPrint® Vegan 150+The CNS FoodPrint Vegan 150+ service utilises state of the art immunoassay microarray technology to detect food specific IgG antibodies to more than 150 different non animal based foods. What is an IgG? IgG stands for Immunoglobulin (type G). Immunoglobulins are a class of proteins that function as antibodies produced by the immune system in response to foreign bodies entering the body. There are several different types of immunoglobulins with IgA,