“…The LST, especially for κ-casein, is known to be useful for diagnosing intestinal cow’s milk allergy. 9 Although several previous case reports have indicated the utility of the LST in evaluating acute solid FPIES for non–cow’s milk antigen, 7 , 10 , 11 as of yet there are no studies investigating its use for predicting OFC results in patients with suspected acute solid FPIES. Therefore, the present study investigated the utility of the LST for diagnosing HEY-FPIES, which has been on the rise in Japan.…”