The accuracy of skin-prick test for food allergens is only approximately 50%. Yet, in the cases of severe food allergies to foods such as peanuts and shell fish, which can cause anaphylaxis, it does appear to be more reliable.
How is this test performed?
The suspect food allergens are mixed with liquid. A drop of each mix is placed on the skin (it can be the forearm or back). Then the skin below each drop is pricked with a fine needle, allowing a small amount of allergen to enter the skin.


