ABSTRACT. Background. As outlined in the Newborn Screening Task Force report published in August 2000, the newborn screening system is more than just testing, but also involves follow-up, diagnosis, treatment, and evaluation. As such, multiple professional and public partners need to be adequately involved in the system to help ensure success. In addition, newborn screening programs are state-based; therefore, policies and procedures vary from state to state. Historically, there has been little uniformity between state newborn screening programs.Objective. To examine the communication practices of state newborn screening programs in the United States, particularly in relation to the medical home.Methods. A facsimile survey of program staff in all US newborn screening programs. Survey data were collected in August 2000.Results. All 51 programs participated. States were questioned about whether or not they had a procedure to identify the infant's medical home before the child's birth. Twelve states (24%) indicated that there was a procedure in place, whereas 39 states (76%) indicated that either no procedure existed or that they were unsure. In contrast, all state programs (except 1) indicated they notified the primary care physician about abnormal results and the need for follow-up. In addition, state programs reported that primary care physicians have responsibilities within the newborn screening system, particularly related to communicating with parents about screen-positive results and coordinating the collection of a second specimen. Thirty states reported that they directly notified parents of screen-positive infants of results and the need for follow-up as well.In regard to informing parents about newborn screening, 45% of states indicated that primary care physicians had some responsibility in informing parents about newborn screening. Most often, parents were informed about newborn screening just before specimen collection, and the most commonly used techniques to educate parents were informational brochures and conversation.Thirty-five states reported that they engaged in longterm tracking of infants after diagnosis confirmation. Only about half of these states provided long-term tracking of all of the conditions included in their state's newborn screening test panel. Of these 35 states that engaged in long-term tracking, 25 reported that they requested patient information from the primary care physician and/or subspecialist about ongoing treatment and follow-up.Conclusions. Newborn screening roles and responsibilities vary tremendously between states. Improvements in communication and better-defined protocols are needed, particularly between state newborn screening programs and the medical home. Many states identified the medical home as having significant responsibilities related to the short-term follow-up of screenpositive infants. Identification of the correct medical home before testing would help to reduce unnecessary time and frustration for state newborn screening programs, especially in the fol...