Test library
Codfish Seafood Allergy Test
This blood test measures IgE antibodies to codfish proteins, helping evaluate fish allergy reactions such as hives, oral itching, or digestive symptoms after eating cod.
Order Codfish Allergy Test
Order online and visit a local collection site, or choose an at-home kit where available. No referral and no insurance required.
Order Codfish Allergy Test- Typical turnaround
- 1-3 business days
- Starting price
- From $49
- Results
- Confidential, online
Quick answer
The codfish allergy test detects immunoglobulin E antibodies against proteins from cod, a commonly eaten white fish. It is intended for people who have reacted to cod or other fish and want objective information about sensitization. Fish allergy often persists into adulthood and can be serious, so results should be reviewed with a healthcare provider. The test uses a blood sample rather than a food challenge.
What this test measures
This test measures allergen-specific immunoglobulin E against codfish proteins. Parvalbumin, a muscle protein found in many fish species, is a major fish allergen, and cod is one of the most studied sources. Reactions can include hives, swelling, oral itching, gastrointestinal symptoms, or respiratory changes after eating fish. The immunoassay reports cod-specific antibody levels and an IgE class.
A blood sample is collected through a standard venipuncture at a partner laboratory and analyzed by immunoassay. Results are expressed in kilounits per liter, and total IgE or eosinophil counts may be included as supporting context. Because parvalbumin is shared across many species, a codfish result can sometimes reflect broader fish sensitization. Panels that test several fish species can help clarify the pattern.
People order this test after a suspected reaction to cod or other fish, or when they need to understand cross-reactivity before adjusting their diet. It may also be part of an evaluation for unexplained hives or digestive symptoms. The test identifies sensitization rather than confirming a clinical allergy, so a qualified healthcare provider should guide interpretation and any diet decisions.
- Codfish-specific IgE antibodies
- Quantitative sIgE concentration reported in kU/L
- Allergen-specific IgE class on the zero to six scale
- Fish parvalbumin IgE markers
- Total serum IgE
- Blood eosinophil count
Why people order this test
- Evaluate a suspected reaction after eating cod or fish
- Assess cross-reactivity across fish species
- Support dietary planning with objective data
- Investigate hives or digestive symptoms after seafood
- Provide information before reintroducing fish
How to prepare
No fasting is required for this allergy blood test, and a single blood draw is typically all that is needed. Follow the laboratory instructions provided with your order and tell the collector about any medications or previous reactions.
Understanding your results
Results are generally reported within one to three business days. A detected response indicates sensitization to codfish proteins, while the clinical meaning depends on your symptoms and exposure. A healthcare provider should interpret the result and advise on next steps.
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Frequently Asked Questions
If I am allergic to cod, can I eat other fish?
Cross-reactivity varies because fish share some proteins. A healthcare provider should advise based on your specific results and history.
Does cooking fish remove the allergen?
Cooking does not reliably eliminate fish allergens, and reactions can occur with cooked fish.
Do I need to fast?
No. Fasting is not required for allergy blood testing unless the laboratory says otherwise.
What is parvalbumin?
It is a muscle protein found in many fish species and a major target of allergic antibodies in fish allergy.
Can fish allergy be outgrown?
Fish allergy often persists, though individual outcomes vary. A qualified provider can reassess over time.
Ready to get tested?
Order online and visit a collection site near you, or choose a mail-in kit. No referral and no insurance required.
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