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Before the Test
Allergy screening
Consult for Allergy screening
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Target Levels (where applicable)
Allergy screening typically targets common allergens, such as pollen, dust, mold, food, and animal dander. The specific allergens that are tested for may vary depending on the individual's medical history, symptoms, and other factors.
What is being checked
Skin prick test: This test involves applying a small amount of an allergen to the skin and observing the reaction. It may be used to help diagnose allergies.
To perform the skin prick test, a healthcare provider will apply a small amount of the allergen to the skin using a needle or a small plastic device. The allergen is usually applied to the arm or the back. The skin is then observed for any reactions, such as redness, swelling, or itching.
Patch test: This test involves applying a patch containing an allergen to the skin and observing the reaction. It may be used to help diagnose allergies or to determine the cause of skin irritation.
To perform the patch test, a healthcare provider will apply a patch containing the allergen to the skin, usually on the upper arm or the back. The patch is typically left in place for 48 hours, and the skin is then observed for any reactions, such as redness, swelling, or itching.
Blood test: A blood test called an allergy panel can be used to measure the levels of certain antibodies, such as immunoglobulin E (IgE), in the blood. This test may be used to help diagnose allergies or to monitor the effectiveness of treatment for allergies.
To perform the blood test, a healthcare provider will take a sample of blood from a vein, usually in the arm. The blood sample is then sent to a laboratory, where it is analyzed to determine the levels of IgE.