{"id":"ige-horse-dander","name":"Horse Dander IgE","shortName":"Horse IgE","aliases":["E003-IgE Horse Dander","Horse Dander IgE","Horse Dander (e3) IgE","e3 IgE","Horse Dander, IgE, Serum","Horse Hair and Dander IgE","Allergen, Epidermals and Animal Proteins, Horse Hair and Dander","Allergen, Animal, Horse Hair/Dander","Equus caballus dander IgE","ImmunoCAP e3","Horse Epithelium IgE","Horse IgE"],"abbreviations":["e3","e003"],"loinc":[{"code":"6143-2","primary":true}],"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 horse dander. Mayo Clinic Laboratories (its current horse dander reflex test, HRSPF) 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's HRSPF lists 0.10 to 0.34 kU/L as borderline, 0.35 to 0.69 as equivocal, and flags 0.70 and above as high, while its older listing for this test (HORS) treats anything under 0.35 as negative; both 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":"Horse Dander, IgE with Reflex to Horse Dander Component, IgE, Serum (test ID HRSPF)","url":"https://www.mayocliniclabs.com/test-catalog/overview/616095","publisher":"Mayo Clinic Laboratories"},{"title":"Horse Dander, IgE, Serum (test ID HORS)","url":"https://www.mayocliniclabs.com/test-catalog/overview/82874","publisher":"Mayo Clinic Laboratories"},{"title":"Allergen, Epidermals and Animal Proteins, Horse Hair and Dander (ARUP test 0055059)","url":"https://ltd.aruplab.com/Tests/Pub/0055059","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"}]}],"review":{"status":"ai-verified","label":"AI-verified against cited sources. Awaiting expert review","lastReviewed":"2026-10-03"},"summary":"Measures IgE antibodies to horse dander, which can be linked to nose, eye and breathing symptoms around horses and, less often, away from them.","url":"https://bloodtesttracker.com/markers/ige-horse-dander","notice":"Information, not medical advice. Ranges differ between labs, so the range on your own report is the one your result is judged against."}