Cucumber (f244) IgG4 details

This test measures IgG4 antibodies to cucumber proteins. IgG4 is a subclass of IgG antibodies the body tends to produce after repeated exposure to a food, so people who eat cucumber often may have measurable levels. A higher result generally shows that your immune system has encountered cucumber, and IgG4 is often seen as a sign of tolerance rather than allergy. It is different from an IgE test, which looks at classic allergic sensitization. Food IgG reflects exposure to a food your immune system has encountered, and its link to symptoms is debated, so a result should not be used on its own to diagnose food allergy or intolerance or to remove foods from your diet.