Demographics and in vivo and in vitro diagnostic test results in patients referring to our allergy Centre with a previous diagnosis of cow’s milk allergy.

CM: Cow’s milk; PR: Parmigiano-Reggiano cheese;Group A: CM and PR tolerant; Group B: Allergic to CM, PR tolerant; Group C: Allergic to CM and PR; Group D: Allergic to CM, but not tested for PR OFC.Allergen short names are as in Table 1. P-P: prick-prick technique with fresh CM.*Values are expressed as percentage of all test results in the group, considering positive values above each specific test cut-off (P-P and skin prick test >7 mm2, IgE ImmunoCAP>0.35 kUa/l, IgE ISAC 0.01 kUa/l).°Age and total IgE are expressed as medians in years and IU/l, respectively.