What is the best way to test for allergies?

There are some other tests that can be a bit more concrete and one is the RAST test. This is a blood test that checks for allergens. Another is *I think I am getting the name wrong here* epidermal test. This is where they stick the allergen just under your skin using a needle. Have you tried eating peanuts after attending this baby shower? If not, then peanuts can still be your culprit even if you have had no allergic reactions in the past. Allergies can occur at any given time with no rhyme nor reason. Nuts are the number one allergy source and can be quite serious. Sometimes allergies can begin mild and proceed to be more serious of nature or they can just pop up severe. I found that my daughter is allergic to shellfish one Thanksgiving. She was having shrimp cocktail and after eating several she developed an itchy rash on her arms. So we correlated it to eating the shrimp. So a couple years later, she tried ONE shrimp and she ended up with a rash all over her body. See the progression in some people?