In those patients who are initiated on omalizumab for multiple food allergies, once baked egg and baked milk are introduced into the diet, how long should you wait until a prepared egg and whole milk challenge is conducted?   

In the OuTMATCH trial, patients were on omalizumab for 16-20 weeks before undergoing food challenges, but as in every situation, the clinical history is important. Skin testing and serum IgE testing may not be reliable on omalizumab, but if the patient is tolerating and eating baked and cooked egg a...