{"id":"ige-hazelnut","name":"Hazelnut (Filbert) IgE","shortName":"Hazelnut IgE","aliases":["Hazelnut IgE","F017-IgE Hazelnut (Filbert)","Hazelnut (Filbert) IgE","Filbert IgE","Hazelnut (f17) IgE","f17 IgE","Hazelnut-Food, IgE, Serum","Allergen, Food, Hazelnut (Filbert)","Corylus avellana nut IgE","ImmunoCAP f17","Cobnut IgE","Hazelnut Specific IgE"],"abbreviations":["f17","f017"],"loinc":[{"code":"6136-6","primary":true},{"code":"112135-9","primary":false}],"specimen":"serum","units":[{"ucum":"kU/L","display":"kU/L"}],"referenceRanges":[{"population":"Adults","low":0,"high":0.09,"unit":"kU/L","unitDisplay":"kU/L","note":"This test shows whether your blood has IgE to hazelnut. Mayo Clinic Laboratories and ARUP print a result under 0.10 kU/L as class 0 (negative), so the usual range here ends at 0.09 and a printed 0.10 counts as above it. Labs draw the line in different places. Mayo Clinic Laboratories lists 0.10 to 0.34 kU/L as borderline and 0.35 to 0.69 as equivocal; its reference values apply to all ages. ARUP prints a reference interval of 0.34 kU/L or lower and says results of 0.10 to 0.34 are for specialist use because their meaning is unclear. The ImmunoCAP maker recommends a 0.35 kUA/L cutoff and tells each lab to set its own range. A result above these lines shows sensitization, which is not the same as an allergy. Use the range printed on your own lab report.","sources":[{"title":"Hazelnut-Food, IgE, Serum (test ID NUTH)","url":"https://www.mayocliniclabs.com/test-catalog/overview/82743","publisher":"Mayo Clinic Laboratories"},{"title":"Allergen, Food, Hazelnut (Filbert) (ARUP test 0098617)","url":"https://ltd.aruplab.com/Tests/Pub/0098617","publisher":"ARUP Laboratories"},{"title":"ImmunoCAP Specific IgE (allergen component f447) 510(k) decision memorandum K173726","url":"https://www.accessdata.fda.gov/cdrh_docs/reviews/K173726.pdf","publisher":"U.S. Food and Drug Administration"},{"title":"Guidelines for the Diagnosis and Management of Food Allergy in the United States: Report of the NIAID-Sponsored Expert Panel","url":"https://pmc.ncbi.nlm.nih.gov/articles/PMC4241964/","publisher":"Journal of Allergy and Clinical Immunology","year":2010}]}],"review":{"status":"ai-verified","label":"AI-verified against cited sources. Awaiting expert review","lastReviewed":"2026-10-03"},"summary":"Measures IgE antibodies to hazelnut. A raised result can reflect a true hazelnut allergy or a milder pattern linked to birch pollen allergy.","url":"https://bloodtesttracker.com/markers/ige-hazelnut","notice":"Information, not medical advice. Ranges differ between labs, so the range on your own report is the one your result is judged against."}