

Shellfish & fish allergy concerns adults
Shellfish and fish allergies are more common in adults than they are in children. The type of sensitizationSensitization is the first step towards developing a type I allergy. Allergic reactions do not occur upon first contact with an allergen. Before that can happen, your immune system must be able to recognize an allergen. When you get stung by a bee, your immune system will remember the structure of the allergen (= a protein in the insect venom) to be able to produce IgE antibodies against it in the future. This process is called sensitization. usually depends on the fish species available to people in different parts of the world.
7DROPS covers a broad spectrum of seafood allergens, including:
- Cod
- Herring
- Mackerel
- Shrimp
- Crab
- Lobster
- Prawn
- Oyster
- Salmon
- Tuna
Find the full list of seafood allergens covered by 7DROPS here.

Shellfish & fish in food
There are a lot of international foods and dishes that often contain (traces of) shellfish or fish. Here’s a short list:
- Bouillabaisse (French)
- Paella (Spanish)
- Ceviche (Latin American)
- Scampi (Italian)
- Jambalaya (South Louisiana)
- Fish sauce ( often found in Southeast Asian cuisine like Chinese, Japanese, Thai, Vietnamese, and Malaysian)

Shellfish & fish allergy symptoms
An allergic reaction to seafood usually occurs within minutes after exposure or ingestion. Seafood allergy symptoms include:
- Runny nose and sneezing
- Skin reactions like hives, redness, or swelling
- Itching or tingling in or around the mouth and throat
- Digestive problems like diarrhea, stomach cramps, nausea, or vomiting
- Tightening of the throat
- Shortness of breath or wheezing
Seafood allergy can also lead to anaphylaxisA severe, potentially life-threatening allergic reaction that can lead to a potentially fatal condition known as anaphylactic shock. It can occur within minutes or several hours after coming into contact with an allergen and is often caused by reactions to medication, food allergens or insect venom., which is a medical emergency that requires immediate treatment with an epinephrine autoinjector, commonly known as an EpiPen.
The right test for you
SCREEN FOR 30+ SEAFOOD TRIGGERS & MANY MORE

ALLERGY TEST
- $229
- 295 ALLERGY TRIGGERS
- -
- At-home allergy test
- IgE based
- Blood collection through finger prick
- Medical result review
Expert opinion
"There are certain proteins in seafood that commonly trigger food allergy symptoms. In fish, it's usually parvalbumin. In shellfish, it's often tropomyosin. 7DROPS covers these and many more proteins causing allergic reactions to seafood."
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But what if?
CROSS-REACTIVITY
When it comes to seafood, there is a high degree of cross-reactivity among different species. The risk of experiencing allergic reactions to other fish when allergic to another species is about 50%.
Furthermore, there is often cross-reactivity detected between dust mites and crustacean shellfish (e.g. shrimp, lobster, crab).
A 7DROPS allergy test covers all eventualities and will also detect cross-reactivities.