Phenylalanine levels in PKU following minor surgery.

Serum phenylalanine values were measured in 10 PKU patients who had minor operations. No individual value exceeded 17 mg/dl and the interpolated mean did not exceed 10 mg/dl on any postoperative day. These data confirm the consensus that minor surgery does not cause major and long-lived perturbations of serum phenylalanine levels in PKU and requires no special dietary measures.