Grapefruit (f209) IgG4 details
What Grapefruit (f209) IgG4 shows
Grapefruit is a citrus fruit eaten fresh and as juice. This test measures IgG4 antibodies to grapefruit proteins as part of a food IgG4 panel. IgG4 antibodies to foods commonly form when you eat a food regularly, so a higher result generally reflects exposure to grapefruit rather than an allergy or intolerance. Some practitioners use food IgG4 results to guide elimination diets, but the link between food IgG4 levels and symptoms is debated and not supported by major allergy organizations. This is different from IgE testing, which looks for allergic sensitization, so a result should be interpreted with your symptoms and diet history in mind.
Tests that include Grapefruit (f209) IgG4
This panel tests for specific IgG4 antibodies to 16 foods.
- Banana (f92) IgG4 Measures IgG4 antibodies to banana, which mainly reflect that you have eaten it; their link to food-related symptoms is debated.
- 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.
- Cabbage (f216) IgG4 Measures IgG4 antibodies to cabbage as part of a food panel; food IgG4 mainly reflects exposure, and its link to symptoms is debated.
- Cauliflower (f291) IgG4 Measures IgG4 antibodies to cauliflower as part of a food panel; food IgG4 mainly reflects exposure, and its link to symptoms is debated.
- Clam (f207) IgG4 Measures IgG4 antibodies to clam as part of a food panel; food IgG4 mainly reflects exposure, and its link to symptoms is debated.
- Coffee (f221) IgG4 Measures IgG4 antibodies to coffee as part of a food panel; food IgG4 mainly reflects exposure, and its link to symptoms is debated.
- Cucumber (f244) IgG4 Measures IgG4 antibodies to cucumber, which reflect exposure to this food; how food IgG4 relates 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.
- Grapefruit (f209) IgG4 Measures IgG4 antibodies to grapefruit, a marker of dietary exposure to this citrus fruit whose link to food-related 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.
- Haddock (f42) IgG4 Measures IgG4 antibodies to haddock, a marker of dietary exposure to this fish whose link to food-related symptoms is debated.
- Halibut (f303) IgG4 Measures IgG4 antibodies to halibut, a marker of dietary exposure to this fish whose link to food-related symptoms is debated.
- Lemon (f208) IgG4 Measures IgG4 antibodies to lemon, which reflect exposure to lemon in your diet; their link to food-related symptoms is debated.
- Melons: Honeydew, Musk, Cantaloupe IgG4 Measures IgG4 antibodies to melons (honeydew, muskmelon and cantaloupe), which mainly reflect that you have eaten this food; their link to food-related symptoms is debated.
- Mushroom (f212) IgG4 Measures IgG4 antibodies to mushroom, which mainly reflect that you have eaten this food; their link to food-related symptoms is debated.
- Oyster (f290) IgG4 Measures IgG4 antibodies to oyster, which mainly reflect that you have eaten this food; their link to food-related symptoms is debated.
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