Hi. I was just doing a little research and came across this website and saw your question. My 17 year old daughter was born with elevated PKU but never required treatment. We saw a genetic counselor, and I remember going in for blood tests periodically until she was about 3 years old. I don’t remember the MD calling it Hyperphe, but it was considered PKU. We were told she would only have to return for tests before starting a family of her own. I recently heard about a study that showed some late treated or non-treated patients ended up having psychological or behavioral issues later in life so i wanted to check that out. Also, i heard that females with PKU need to adhere to the special diet before becoming pregnant so the baby isn’t harmed. Do you happen to know anything about this?