Sesame Allergy Test London | Ses i IgE
This guide explains sesame IgE testing, including UK allergen labelling, hidden sesame sources, and the Ses i1 and Ses i3 components. Our service is CQC-registered and diagnostic-only: we provide nurse-led venous sample collection and laboratory reporting, while diagnosis and treatment decisions remain with your GP or specialist.
Safety note
If severe breathing symptoms, throat swelling, collapse, or suspected anaphylaxis occur, call 999 immediately. Blood testing is not an emergency service.
Mandatory UK allergen and hidden sources
Sesame is a declarable allergen under UK food information rules, so packaged foods must identify it when present. Despite labelling, sesame can still appear in less obvious products.
Hidden sesame sources can include breads, burger buns, hummus, tahini, dips, dressings, and spice blends. Reading labels and asking when eating out remains important.
Ses i1 / Ses i3 components
Ses i1 and Ses i3 are sesame storage protein components used in component-resolved testing. They can support characterisation of sensitisation patterns in selected cases.
Component findings should always be interpreted with your reaction history and clinical context by your GP or specialist, rather than in isolation.
Sesame Component Test
Component-level sesame testing support, including Ses i1 / Ses i3 context.
View Sesame Component Test →Frequently asked questions
Is sesame a mandatory UK allergen?
Sesame is one of the allergens that must be declared under UK food information rules. Labelling requirements help people with sesame allergy identify products that contain it.
Where can sesame be hidden?
Sesame can appear in less obvious foods such as breads, burger buns, hummus, tahini, dips, dressings, spice blends, and some bakery and snack products. Always check labels and ask when eating out.
What are Ses i1 and Ses i3?
Ses i1 and Ses i3 are sesame seed storage protein components used in component-resolved testing to help characterise sensitisation patterns in selected patients.
Can a blood test alone diagnose sesame allergy?
No. Specific IgE results are supportive markers and should be interpreted with your reaction history by your GP or specialist. Our clinic provides nurse-led sample collection and laboratory reporting only.