{"id":"ige-cat-dander","name":"Cat Dander IgE","shortName":"Cat IgE","aliases":["E001-IgE Cat Dander","Cat dander (e1) IgE","e1 IgE","Cat Hair/Dander","Allergen, Epidermals and Animal Proteins, Cat Dander","Cat Dander IgE Ab","Cat IgE","Cat Dander","e1","ImmunoCAP e1"],"abbreviations":["e1","E001"],"loinc":[{"code":"6833-8","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":"Labcorp's sample allergen report prints 'Class 0' as the reference interval, and its class table defines class 0 as under 0.10 kU/L (ARUP also calls under 0.10 'no significant level detected'), so the range is encoded as 0 to 0.09. Other labs set the cutoff higher: ARUP's cat dander class table calls 0.10 to 0.34 'clinical relevance undetermined' and says results in that range are intended for specialist use. Children's Minnesota Laboratory reports anything under 0.35 kU/L as negative. Thermo Fisher, which makes the ImmunoCAP system, says results of 0.1 kUA/L or more show sensitization, which is not the same as allergy. Results from different labs or test brands are not directly comparable.","sources":[{"title":"Allergen, Epidermals and Animal Proteins, Cat Dander (test 0055006)","url":"https://ltd.aruplab.com/Tests/Pub/0055006","publisher":"ARUP Laboratories"},{"title":"Cat Hair/Dander (test 602454)","url":"https://www.labcorp.com/tests/602454/cat-hair-dander","publisher":"Labcorp"},{"title":"Allergen IgE (laboratory test information)","url":"https://www.childrensmn.org/Manuals/Lab/chemistry/allergen-ige.pdf","publisher":"Children's Minnesota Laboratory"},{"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)","year":2024},{"title":"Allergy Testing in Childhood: Using Allergen-Specific IgE Tests (clinical report)","url":"https://doi.org/10.1542/peds.2011-2382","publisher":"American Academy of Pediatrics (Pediatrics)","year":2012},{"title":"Sample report 607120, Allergens with Component Reflexes Area 20 (class description table)","url":"https://files.labcorp.com/testmenu-d8/sample_reports/607120.pdf","publisher":"Labcorp"}]}],"review":{"status":"ai-verified","label":"AI-verified against cited sources. Awaiting expert review","lastReviewed":"2026-10-03"},"summary":"Measures IgE antibodies to cat dander to show whether your immune system has become sensitized to cat allergens.","url":"https://bloodtesttracker.com/markers/ige-cat-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."}