Some patients wait years for a definitive diagnosis. Using a combination of scientific resources and medical expertise at the National Institutes of Health (NIH), the Undiagnosed Diseases Program now provides a place for physicians to refer patients when a diagnosis eludes them. In this segment, host Dr. Maurice Pickard, speaks with Dr. William Gahl, director of the Undiagnosed Diseases Program, and Stephen Groft PharmD, director of the Office of Rare Diseases at the NIH, about program logistics and resources, and the referral process for doctors.