Lab test

Clam Allergy Test - Shellfish Allergy

A clam-specific IgE blood test checks for antibodies the immune system produces against clam proteins.

Typical price

From $49

Results

1-3 business days

Preparation

See preparation notes below

Sample

Blood draw or sample collection at a local center

A clam-specific IgE blood test checks for antibodies the immune system produces against clam proteins. It is a screening tool for suspected shellfish allergy and is not a diagnosis on its own. A healthcare provider may order it after a reaction to clams or other mollusks, or as part of a broader shellfish panel. Because clams are mollusks rather than crustaceans, the result is interpreted separately from shrimp, crab, and lobster markers.

• Clam-specific IgE Antibodies produced in response to clam proteins; used to assess sensitization to clams.

• People who develop hives, itching, or swelling after eating clams
• Individuals with mouth tingling or throat irritation after mollusks
• Those with digestive upset, vomiting, or diarrhea after clams
• People with eczema or skin reactions who suspect a seafood trigger
• Anyone with a history of reaction to clams or other shellfish

• No fasting is required for this IgE allergy test
• The blood sample can be collected at any time
• Tell the provider about medications you take
• No special diet is needed beforehand

The clam-specific IgE result is reported as a numeric level or class. A value above the reporting threshold may indicate sensitization to clam proteins, but sensitization does not always lead to symptoms. A low or undetectable level makes a true clam allergy less likely without completely ruling it out. Clams are mollusks, which are distinct from crustaceans such as shrimp and crab, so a provider interprets the result separately. Discuss results with a healthcare provider before changing your diet.

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