Sickle cell disease (SCD) is a debilitating genetic disorder affecting 70,000-100,000 Americans. It is frequently associated with very serious medical complications. For children with SCD, successfully transitioning to adult care is a vital step in ensuring continuity of care, managing their disease, and improving their health outcomes. Transition programs have been created to facilitate the transition process. However, few studies have assessed transition readiness and whether transition program components meet the transition needs of patients and families.