Use

The Walnut Food (Juglans spp) IgG test is intended for detecting serum IgG antibodies to walnut proteins, which may indicate immunological sensitization to the allergen. While the presence of food-specific IgG suggests exposure or sensitization, it should not be taken as evidence of a food allergy. It is commonly used in special clinical situations to guide food elimination and dietary challenges in patients with food-related complaints. However, the clinical utility of food-specific IgG tests has not been firmly established.