What blood tests check allergy & coeliac?
Coeliac-related antibody tests and comprehensive allergy testing. Further testing or medical interpretation may be required. Tests available in this category include ALEX³ Multiplex Allergy Profile (300 Allergens + Total IgE), Gliadin Antibodies IgG, Tissue Transglutaminase IgA. Each test includes a home collection kit, prepaid tracked return and professional laboratory analysis.
Browse all OptiBlood tests or explore the individual tests below.
These tests provide laboratory information to help you understand your health. They are not a diagnosis and do not replace advice from an appropriate healthcare professional.
Allergy & Coeliac
Coeliac-related antibody tests and comprehensive allergy testing. Further testing or medical interpretation may be required.
3 tests
The multiplex allergy ALEX³ profile has upgraded from ALEX2 to ALEX3. Analysed by The Doctors Laboratory, ALEX³ includes a comprehensive panel of 300 allergens covering high-relevance allergen sources — including animal dander, cereals, egg, legumes, milk, mites, moulds, pollen, seafood, tree nuts, and venoms — supplemented with a Total IgE. Crucially, it contains 218 molecular allergens (107 of which are completely unique to the ALEX³ test), providing a comprehensive sensitisation profile. In practical terms, this molecular technology pinpoints the exact protein components triggering your immune system, helping distinguish between true primary allergies and harmless cross-reactions from a single home finger-prick sample.
300 allergens + Total IgE (301 markers)
5–7 working days
A coeliac-related antibody test. Further testing or medical interpretation may be required.
Gliadin Antibodies IgG
24–72h
A coeliac-related antibody test. Further testing or medical interpretation may be required.
Tissue Transglutaminase IgA
24–72h