The time it takes to receive results from Skin Allergy Testing depends on the type of test conducted. For skin prick tests and intradermal tests, results are typically available within 15 to 20 minutes. During this time, the skin is observed for immediate reactions, such as redness, swelling, or the formation of a wheal (a raised bump). These quick results make skin prick testing an efficient diagnostic tool for identifying immediate hypersensitivities, such as those associated with pollen, pet dander, or insect venom. The healthcare provider will review the results during the same session and provide guidance on next steps.

For patch Testing, which is used to identify delayed allergic reactions to substances like metals, fragrances, or preservatives, the process takes longer. The patches are applied to the skin and remain in place for 48 hours, after which they are removed, and the skin is evaluated for reactions. A follow-up visit is usually scheduled 72 to 96 hours after the initial application to check for any delayed responses. While the patch testing process takes more time, it is highly effective for diagnosing contact allergies and providing detailed insights into long-term sensitivities.