My son took a blood test in August and the test read that he had a 2.1 reaction to peanuts, and a 0.6 reaction to dogs and cats. I was not able to get an appointment with a specialist until OCTOBER 13th. However my son does attend day care, and I am very worried. I was told just to rush him to the ER if he had a reaction, and to avoid ALL peanut products . Does anyone know what a 2.1 reaction means?