Email this page To: From: Subject: Message: Hereditary persistence of fetal hemoglobin - Hereditary Persistence of Fetal Hemoglobin (HPFH) is an unusual condition in which red blood cells contain greater than normal amounts of hemoglobin F (fetal hemoglobin). Learn more about caring for a child who has HPFH. - https://www.stjude.org/treatment/patient-resources/caregiver-resources/patient-family-education-sheets/hematology/hereditary-persistence-of-fetal-hemoglobin.html A summary of this page will be sent along with your message I am a referring physician Yes, I would like to receive email updates. Send Email Your message has been emailed successfully. Thank you for your interest in St. Jude Children's Research Hospital.