{"id":"ige-soy","name":"Soybean IgE","shortName":"Soy IgE","aliases":["Soy IgE","F014-IgE Soybean","Soybean (f14) IgE","f14 IgE","Soybean IgE","f14","Soy (f14) IgE","Allergen, Food, Soybean IgE","Allergen, Food, Soybean","Soya IgE","Glycine max IgE","ImmunoCAP f14"],"abbreviations":["f14","F014"],"loinc":[{"code":"6248-9","primary":true},{"code":"112121-9","primary":false}],"specimen":"serum","units":[{"ucum":"kU/L","display":"kU/L"},{"ucum":"U/mL","display":"UA/mL"}],"referenceRanges":[{"population":"Adults","low":0,"high":0.09,"unit":"kU/L","unitDisplay":"kU/L","note":"Class 0, under 0.10 kU/L, is the 'none detected' cutoff: Labcorp prints 'Class 0' (under 0.10 kU/L, negative) as the reference interval for this test, so the range is encoded as 0 to 0.09. Quest and ARUP also print a result under 0.10 kU/L as class 0, and a printed 0.10 is already class 0/1 (Labcorp 'equivocal/low'). ARUP calls 0.10 to 0.34 'clinical relevance undetermined' and says results in that range are for specialist use, and Quest calls it a very low level. Thermo Fisher, which makes the ImmunoCAP system, says results of 0.1 kUA/L or more indicate sensitization. The older 0.35 kU/L cutoff is still used in many studies, including the US NHANES survey. A result above the range shows sensitization, not that you have an allergy (NIAID 2010), and results from different labs or assay systems may not be comparable. For soy, a positive result is often cross-reactivity (with peanut or, through Gly m 4, with birch pollen), and the extract can miss birch-related soy allergy (Thermo Fisher).","sources":[{"title":"F014-IgE Soybean (test 602457)","url":"https://www.labcorp.com/tests/602457/soybean","publisher":"Labcorp"},{"title":"Sample patient report: F014-IgE Soybean (test 602457)","url":"https://files.labcorp.com/testmenu-d8/sample_reports/602457.pdf","publisher":"Labcorp"},{"title":"Allergen, Food, Soybean (test 0055031)","url":"https://ltd.aruplab.com/Tests/Pub/0055031","publisher":"ARUP Laboratories"},{"title":"ImmunoCAP Specific IgE Blood Test: Allergy Test List (interpretation table and test codes)","url":"https://www.questdiagnostics.com/content/dam/corporate/restricted/documents/hcp/about-our-tests/TL3930_Allergy%20Test%20list%202017.pdf","publisher":"Quest Diagnostics","year":2017},{"title":"Your quick guide to using ImmunoCAP Specific IgE testing","url":"https://corporate.thermofisher.com/content/dam/phadia/library/en/Quick_guide_to_using_ImmunoCAP_Specific_IgE_testing.pdf","publisher":"Thermo Fisher Scientific (Phadia)"},{"title":"Allergen Encyclopedia: f14 Soybean","url":"https://www.thermofisher.com/phadia/wo/en/resources/allergen-encyclopedia/f14.html","publisher":"Thermo Fisher Scientific (Phadia)"},{"title":"Guidelines for the Diagnosis and Management of Food Allergy in the United States: Report of the NIAID-Sponsored Expert Panel","url":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4241964/","publisher":"NIAID / Journal of Allergy and Clinical Immunology","year":2010},{"title":"The natural history of soy allergy","url":"https://pubmed.ncbi.nlm.nih.gov/20226303/","publisher":"Journal of Allergy and Clinical Immunology","year":2010},{"title":"Prevalence of allergic sensitization in the United States: results from the National Health and Nutrition Examination Survey (NHANES) 2005-2006","url":"https://pmc.ncbi.nlm.nih.gov/articles/PMC4119838/","publisher":"Journal of Allergy and Clinical Immunology","year":2014},{"title":"Allergy Blood Test","url":"https://medlineplus.gov/lab-tests/allergy-blood-test/","publisher":"MedlinePlus (National Library of Medicine)"}]}],"review":{"status":"ai-verified","label":"AI-verified against cited sources. Awaiting expert review","lastReviewed":"2026-10-03"},"summary":"Shows whether your immune system has made IgE antibodies to soy. This is called sensitization and doesn't always mean a soy allergy.","url":"https://bloodtesttracker.com/markers/ige-soy","notice":"Information, not medical advice. Ranges differ between labs, so the range on your own report is the one your result is judged against."}