{"id":"ige-cashew","name":"Cashew Nut IgE","shortName":"Cashew IgE","aliases":["Cashew IgE","F202-IgE Cashew Nut","Cashew Nut IgE","Cashew Nut (f202) IgE","f202 IgE","Cashew","Allergen, Food, Cashew","Anacardium occidentale IgE","ImmunoCAP f202"],"abbreviations":["f202","F202"],"loinc":[{"code":"6718-1","primary":true},{"code":"112155-7","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":"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 lists a reference interval of 0.34 kU/L or lower for its cashew test, calls 0.10 to 0.34 'clinical relevance undetermined', and adds an Ana o 3 component test when the result is 0.1 kU/L or more. 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. In one study of 61 children, a 95% probability of cashew allergy was estimated at 2.0 kU/L for Ana o 3, not for whole cashew (Lange 2017).","sources":[{"title":"Allergen, Food, Cashew With Reflex to Components, IgE (test 3018562)","url":"https://ltd.aruplab.com/Tests/Pub/3018562","publisher":"ARUP Laboratories"},{"title":"Cashew Nut (test 602461)","url":"https://www.labcorp.com/tests/602461/cashew-nut","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":"Ana o 3-specific IgE is a good predictor for clinically relevant cashew allergy in children","url":"https://pubmed.ncbi.nlm.nih.gov/27644013/","publisher":"Allergy","year":2017},{"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 cashew nut to show whether your immune system has become sensitized to it.","url":"https://bloodtesttracker.com/markers/ige-cashew","notice":"Information, not medical advice. Ranges differ between labs, so the range on your own report is the one your result is judged against."}