Pecan (f201) IgG4 details
What Pecan (f201) IgG4 shows
This test measures IgG4 antibodies to proteins in pecan. Your immune system commonly makes IgG4 to foods you eat regularly, so the result mainly reflects exposure to pecan rather than an allergy. Food IgG4 tests are sometimes used to look at possible food sensitivities, and a higher result generally means more frequent or recent exposure. However, the link between food IgG4 levels and symptoms is debated, and this test does not measure the IgE antibodies involved in classic food allergy. Results are best discussed with a clinician alongside your symptoms and diet, rather than used on their own to cut out foods.
Tests that include Pecan (f201) IgG4
This panel tests for specific IgG4 antibodies to 9 foods.
- Cashew (f202) IgG4 Measures IgG4 antibodies to cashew as part of a food panel; food IgG4 mainly reflects exposure, and its link to symptoms is debated.
- Celery (f85) IgG4 Measures IgG4 antibodies to celery 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.
- Crab (f23) IgG4 Measures IgG4 antibodies to crab, which reflect exposure to this shellfish; how food IgG4 relates to symptoms is debated.
- Flounder (f147) IgG4 Measures IgG4 antibodies to flounder, a marker of dietary exposure to this fish whose link to food-related symptoms is debated.
- Kiwi (f84) IgG4 Measures IgG4 antibodies to kiwi fruit, which reflect exposure to kiwi in your diet; their link to food-related symptoms is debated.
- Lamb (f88) IgG4 Measures IgG4 antibodies to lamb, which reflect exposure to lamb in your diet; their link to food-related symptoms is debated.
- Pecan (f201) IgG4 Measures IgG4 antibodies to pecan, which mainly reflect that you have eaten this food; their link to food-related symptoms is debated.
- Salmon (f41) IgG4 Measures IgG4 antibodies to salmon, which reflect your immune system's exposure to this fish; their link to food symptoms is debated.
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