- Has a demonstrated sensitivity to a relevant dominant seasonal allergen known to induce SAR based on a documented result with a standard skin prick test either within 12 months prior to screening or performed at the screening visit. A positive test is defined as a wheal diameter at least 3 mm larger than the control wheal (normal saline) for the skin prick test. The subject's positive allergen test must be consistent with the medical history of SAR, and the allergen must be present in the subject's environment throughout the study.