Tuna (f40) IgG4 details
What Tuna (f40) IgG4 shows
This test measures IgG4 antibodies to tuna proteins in your blood. IgG4 food tests are sometimes ordered to look at possible food sensitivities that are not immediate allergies. A higher result generally reflects exposure — your immune system has met tuna through your diet — and IgG4 is often associated with tolerance rather than an allergic reaction. A low result usually means little recent exposure. The link between food IgG4 levels and symptoms is debated, and this result does not diagnose a fish allergy, which is assessed with IgE testing and your history.
Tests that include Tuna (f40) IgG4
This panel tests for specific IgG4 antibodies to 9 foods.
- Broccoli (f260) IgG4 Measures IgG4 antibodies to broccoli as part of a food panel; food IgG4 mainly reflects exposure, and its link to symptoms is debated.
- Grape (f259) IgG Measures IgG antibodies to grape, reported on a food IgG4 panel, as a marker of dietary exposure whose link to symptoms is debated.
- Green Bean (f315) IgG4 Measures IgG4 antibodies to green beans, a marker of dietary exposure to this vegetable whose link to food-related symptoms is debated.
- Onion (f48) IgG4 Measures IgG4 antibodies to onion, which mainly reflect that you have eaten this food; their link to food-related symptoms is debated.
- Pineapple (f210) IgG4 Measures IgG4 antibodies to pineapple, which reflect your immune system's exposure to this fruit; their link to food symptoms is debated.
- Shrimp (f24) IgG4 Measures IgG4 antibodies to shrimp, which reflect your immune system's exposure to this shellfish; their link to food symptoms is debated.
- Sugar Beet Seed (Beta Vulgaris) IgG4 Measures IgG4 antibodies to sugar beet, a source of table sugar and fibre, which mainly reflect dietary exposure; their link to symptoms is debated.
- Tuna (f40) IgG4 Measures IgG4 antibodies to tuna, which mainly reflect how often you eat it; their link to food-related symptoms is debated.
- Turkey IgG4 Measures IgG4 antibodies to turkey meat, which mainly reflect how often you eat it; their link to food-related symptoms is debated.
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