Lab test

Codfish Allergy Test - Fish Allergy

A codfish-specific IgE blood test checks for antibodies the immune system produces against cod 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 codfish-specific IgE blood test checks for antibodies the immune system produces against cod proteins. It is a screening tool for suspected fish allergy, not a diagnosis on its own. A healthcare provider may order it after a reaction to cod or other white fish, or as part of a broader fish allergen panel. Because many fish share similar proteins, the result is often interpreted alongside other fish markers and your reaction history.

• Codfish-specific IgE Antibodies produced in response to cod proteins; used to assess sensitization to codfish.

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

• 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 codfish-specific IgE result is reported as a numeric level or class. A value above the reporting threshold may indicate sensitization to cod proteins, but sensitization does not always lead to symptoms. A low or undetectable level makes a true cod allergy less likely without completely ruling it out. Many fish share similar muscle proteins, so a provider may consider cross-reactivity with other fish species such as catfish. Discuss results with a healthcare provider before changing your diet.

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