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Non-invasive prenatal testing ('NIPT') enables quick, safe and generally reliable screening during early pregnancy. NIPT is currently available in Australia for screening for conditions such as trisomy 21 ('Down Syndrome') which are immediately apparent at birth. NIPT may also be used in the future to detect adult-onset disorders and risk profiles for conditions which manifest later in life. Although expanded prenatal testing has the potential to enhance reproductive choice, the use of NIPT to detect adult-onset conditions raises significant ethical concerns about the welfare of the future child. In this article, we explore the legal and ethical issues raised by NIPT for adult-onset conditions. We make some preliminary proposals for regulating access to NIPT, which encourage prospective parents to consider the interests of the future child through careful genetic counselling.