Seafood Allergen List

People with shellfish allergies are generally allergic to either mollusks (hinged shells) or custraceans (jointed, multi-part shells), rarely to both.  However, because of the risk of cross-contamination, it may be wise to avoid all seafood.  

Examples of mollusks include:

  • Abalone
  • Clam
  • Cockle
  • Conch
  • Limpets
  • Mussels
  • Octopus
  • Oysters
  • Periwinkle
  • Quahaugs
  • Scallops
  • Snails (escargot)
  • Squid (calamari)
  • Whelks

Examples of crustaceans include:

  • Crab
  • Crawfish, crayfish
  • Lobster, langouste, langousine, scampo, coral, tomalley
  • Shrimp, prawns, crevette
  • Snails
  • Cockle, sea urchin
  • Imitation crab is made from fish but may contain shellfish
  • Surimi (a processed seafood product) is usually made from white fish but may contain shellfish extract.

    • Foods usually made with shellfish include: 

    • Paella
    • Bouillabaisse
    • Civiche
    • Gumbo
    • Frito misto
    • Fruits de mer (French for seafood)
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