Adjustment in treatment must be made for these patients and their special situations. Allergy testing and treatment in this office is unique in the numerous ways that allergies are managed. After testing, many patients learn that the offending substance or substances can be avoided or infrequently encountered, and no medication is required. Allergy testing is performed on the patient's blood or by skin testing. Occasionally patch tests are used.
Sublingual testing is also useful, but quite time consuming.
If a baby is reacting with colic, rashes, or failure to thrive due to food intolerances, then it is a good sign that their antibody system is working to reject and offending agent. Even newborns who receive grafts have to be checked for antigen-antibody reactions.