Crabs

Crab allergen belongs to the group of seafood allergens and is one of the common causes of food allergies. The allergic reaction is mainly triggered by proteins found in the muscle tissue of crustaceans, which can provoke an immune response even when consumed in small amounts.

Crab allergy may present with a variety of symptoms — ranging from skin reactions and digestive disturbances to more severe systemic reactions. In some cases, severe allergic reactions, including anaphylaxis, may occur.

This test detects specific IgE antibodies to crab allergens, helping physicians confirm or rule out allergic sensitization and determine appropriate dietary and treatment recommendations.

Indications

• skin reactions after consuming seafood (rash, itching, hives)
• swelling of the lips, tongue, or throat after eating
• digestive problems after seafood consumption (nausea, abdominal pain, diarrhea)
• breathing difficulties or coughing after seafood consumption
• suspected allergy to crustaceans

The test may also be recommended to identify the specific source of food allergy.

Procedure

A venous blood sample is collected and analyzed in the laboratory to determine the presence of specific IgE antibodies to crab allergens.