Physical therapists routinely screen for undiagnosed and serious disorders and complications from medical treatment; however, as moderator Daniel Riddle, PT, PhD, FAPTA, points out, "evidence for these screening procedures and the quality of these screening approaches is generally lacking in [the physical therapy] literature." Two case reports published in the March 2009 issue of PTJ describe patients who were successfully screened for medical problems and complications. In this discussion, William VanWye, PT, DPT, ACSM-RCEP, CSCS, author of "Patient Screening by a Physical Therapist for Nonmusculoskeletal Hip Pain," is joined by 2 noted experts on the topic of differential diagnosis and screening: William Boissonnault, PT, DHSc, FAAOMPT, and Catherine Goodman, PT, MBA, CBT. They discuss the role of the physical therapist in screening, the resources that physical therapists require for this aspect of patient management, and the gaps in the physical therapy literature.