Lab test

Swordfish Allergy Test - Fish Allergies

A swordfish-specific IgE blood test measures antibodies the immune system may produce against proteins in swordfish, a commonly eaten fish.

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 swordfish-specific IgE blood test measures antibodies the immune system may produce against proteins in swordfish, a commonly eaten fish. It is a screening tool for suspected fish allergy rather than a diagnosis on its own. A clinician may order it after a reaction to swordfish or other fish, as part of a broader seafood panel, or when symptoms suggest sensitivity to swordfish and related species.

• Swordfish-specific IgE Antibodies produced in response to swordfish proteins, used to assess sensitization.

• Hives, itching, or swelling after eating swordfish
• Throat tightness, wheezing, or breathing symptoms after fish exposure
• Digestive symptoms following swordfish or fish meals
• Testing as part of a broader fish or seafood allergy panel
• A history of reactions to other fish species

• No fasting is required for most IgE allergy tests
• Tell the collector about antihistamines or other medications you take
• Drink water before the blood draw
• One blood sample is typically sufficient for the swordfish-specific IgE assay

An elevated swordfish-specific IgE level may indicate sensitization to swordfish proteins and can be associated with allergic reactions. A positive result alone does not confirm a clinical allergy, and a low level does not fully exclude one. Some fish proteins cross-react between species, so a healthcare provider should interpret the result with your history and symptoms.

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