My daughter (now 16 years old) was diagnosed at age 2 and had two subsequent positive skin tests to peanuts and tree nuts, but has never had a reaction at all other than her first (to walnut) at about 1 yr old. So I was hoping that the peanut positive was a false positive all along. We had component testing done recently, using the Uknow peanut test through Phadia (Thermo Fisher Scientific) which we were told was more comprehensive and accurate and the results show a severe peanut allergy.