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Crustaceans

Crustaceans on kirje 2 neljateistkümnest ainest, mille määruse (EL) nr 1169/2011 II lisa deklareeritavaks teeb. IgE-mediated food allergy, mainly to tropomyosin. Kus see peitub, millised erandid kehtivad ja millega see ristreageerib.

See on viiteteave, mitte diagnoos ega ravikava. Õietolmukalender ei ütle, millele te allergiline olete, ja ükski leht ei saa toitu teie jaoks ohutuks tunnistada — ainult sildi pakendil teie käes ja arst, kes teie ajalugu tunneb. Kõik, mis ületab kergeid, lühiajalisi sümptomeid suus või ninas — turse, mis mõjutab hingamist või neelamist, nõgestõbi suust eemal, vilistav hingamine, oksendamine või minestustunne — on hädaolukorra küsimus, mitte lugemise küsimus.

Mida seadus ütleb

II lisa, kirje2: “Crustaceans and products thereof”

See sõnastus kannab kogu kohustuse. Aine tuleb deklareerida iga kord, kui seda kasutatakse toidu valmistamisel ja see on valmistootes endiselt olemas, isegi muudetud kujul, ja see tuleb koostisosade nimekirjas esile tõsta tüpograafiaga — paks, suurtähed, kaldkiri, allajoonimine või kontrastvärv. Eraldi allergeenikasti õiguslikku nõuet pole, seega on koostisosade nimekiri koht, kuhu vaadata.

Source: Määrus (EL) nr 1169/2011, II lisa ja artikkel 21 · checked 2026-09-06

Mis reaktsioon tegelikult on

Crustacean allergy means prawns, shrimp, crab, lobster, langoustine and crayfish. The dominant allergen is tropomyosin, a muscle protein that is heat-stable, so cooking does not make a crustacean safe and the steam from a boiling pot can be enough to trigger symptoms in a sensitive person. Reactions tend to be immediate and can be severe.

Who gets it, and does it last

Unlike milk and egg allergy, crustacean allergy usually begins in adulthood and usually persists. It is one of the more common causes of food-triggered anaphylaxis in adults across Europe.

Where it hides

• Fish stock, bouillabaisse and seafood soups
• Surimi and crab sticks
• Thai and Vietnamese pastes and curries containing shrimp paste
• Some kimchi
• Prawn crackers
• Glucosamine supplements made from shellfish

The August crayfish party is a fixture in Sweden and Finland, and prawns run through the salads, sandwiches and party food of the whole region. Shellfish stock also turns up in restaurant sauces that are not described as seafood dishes at all, which is the situation worth asking about.

Cross-reactions

Tropomyosin is shared across the arthropods and molluscs, which produces one of the best-known cross-reaction patterns in allergy: crustaceans with molluscs, and both with house dust mite and cockroach. A house dust mite allergic adult who reacts to their first plate of prawns is following a documented route. Crucially, crustacean allergy has nothing to do with fish allergy — they are unrelated animals with unrelated proteins, and "seafood allergy" as a single idea is not a clinical category.

The labelling detail

Crustaceans are entry 2 with no exemptions, so any crustacean-derived ingredient must be declared and emphasised however small the quantity. There is no threshold below which it stops being declarable.

Exemptions: none. Entry 2 has no carve-outs at all, so there is no processed fraction of it that escapes the label.

Precautionary wording — “may contain”, “made in a factory that also handles” — is a separate matter: it is voluntary, unstandardised and carries no threshold. How strictly to treat it is a clinical decision, not a reading of the label. The labelling explainer sets out the whole frame, including what happens in restaurants and bakeries where there is no pack at all.

Mis loetakse valesti

Two errors matter. Being allergic to prawns does not mean being allergic to fish. And an iodine allergy — or a reaction to iodinated contrast media in a hospital scan — is not caused by shellfish; the belief that it is has been examined repeatedly and has not held up.

Allikad:Määrus (EL) nr 1169/2011, II lisa· Komisjoni rakendusmäärus (EL) nr 828/2014 (gluteeniväited)· WHO/IUIS allergeenide nomenklatuur· hooajaaknad Eesti, Soome, Rootsi, Taani ja Norra riiklikest aerobioloogia seireprogrammidest· ristreageerimise mustrid parafraseeritud allergiakirjandusest ja EAACI materjalist· kontrollitud2026-09-06

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