A new blood test promises to predict which people will have severe allergic reactions to foods according to a new study from Mount Sinai researchers.  To detect food allergies, physicians typically use skin prick tests or blood tests that measure levels of allergen-specific IgE (sIgE), a protein made by the immune system. However, these tests cannot predict the severity of allergic reactions. Oral food challenges, … Continue reading New immune-based blood test predicts severity of peanut and seafood allergies.