The implications of genetics for the provision of healthcare are not as clear cut now as they were thought to be ten or 15 years ago. I don't think anyone can answer this question succinctly. I say this not to get out of answering the question but to highlight the dangers of a 'one size fits all' approach to genetics. While science may be universal, different societies have different traditions and different ways of organising themselves. The most fundamental principle must be the protection of the privacy of the individual and not any economic or social cost to society.
Any information derived from genetic tests has to be confidential like any other medical record.
Whilst we have become to accept that insurance companies and future employers have limited access to medical records, it would appear obligatory that this is only true for illnesses that are part of an existing medical record. No information relating to conditions that one day may develop due to a genetic predisposition must be disclosed under any circumstances, and must not be accessible to anyone apart from the individual and the health care workers involved. Before performing any test, informed consent by the individual is required. No tests other than those consented to by the patient must be performed. Provide exceptions to the duty of medical confidentiality where other blood relatives are at risk and treatment or prevention is available.