there's no test that will predict the severity of a reaction. the amount of ige antibodies produced doesn't correlate with how severe a reaction is. [immunoglobin e antibodies (ige) are produced in excess by allergic people. ] at one point a child may have a severe reaction and another time it may be much less severe. it could be due to the amount of the food they ate whether or not it was an empty stomach if they already had a viral infection -- all kinds of factors.
what predicts the severity of a food allergy?