In Swedish law, the notion of ‘science and proven experience’ defines the gold standard for public decision-making and practice, especially in medicine. The notion is notoriously vague but nevertheless plays an important role in the distribution of rights and duties of patients and healthcare workers. For example, failure to provide care in accordance with this standard can lead to penal responsibility. The notion also helps to define Swedish patients’ right to reimbursement for cross-border healthcare. From a legal point of view, (...) the notion is especially intriguing because it appears to import medical standards into the legal conceptual apparatus. The purpose of this article is to explore the mechanisms of this andkindred ‘importing notions’ by investigating the role that the notion of science and proven experience plays in Swedish law and in the transfer of information between the legal and medical fields. (shrink)