P90 - Comparing the accuracy of skin prick tests to fresh milk or cow’s milk solution in predicting challenge outcomes

Introduction Allergy to cow’s milk is the most common allergy found in infants and young children. The estimated prevalence of milk allergy is 2-7.5% (Vandenplas) and the variability relates to diagnosis methods used and services available in any given demographic area. Skin prick tests (SPTs) are a well established and widely used method of allergy testing for cow’s milk. Many clinics use commercially available solutions in their clinics with the use of some fresh foods but there has been limited research available comparing the accuracy of these solutions compared to fresh foods and a literature search carried out in August 2012 only found 1 paper by Mauro et al. who looked into this. At the Royal Free Hospital, London UK, we introduced fresh milk SPTs alongside the use of solution in August 2011 to aid our decision making in these children.