2 - 3 days
IBT Chronic Urticaria Index
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Ex-Vivo Challenge and cell culture.
Patients with a chronic form of urticaria who are positive (>10) with the CU index have an autoimmune basis for their disease. A positive result does not indicate which autoantibody (anti-IgE, anti-FceRI or anti-FceRII) is present.
* Reference ranges may change over time. Please refer to the original patient report when evaluating results.