This paper provides an empirical account of commercial genetic testing in China. Commercial predictive genetic testing has emerged and is developing rapidly in China, but there is no strict and effective governance. This raises a number of serious social and ethical issues as a consequence of the enormous potential market for such tests. The paper demonstrates that the commercialization of genetic testing and the lack of adequate regulation have created an environment in which dubious advertising practices and misleading and unprofessional (...) medical advice are commonplace. The consequences of these ethically problematic activities for the users of predictive tests are unknown. The paper concludes with a bioethical and social science perspective on the ethical governance issues raised by the dissemination and utilization of commercial genetic testing in Chinese society. (shrink)