The implementation of non-invasive prenatalscreening (NIPS) in Canada will be affected by legal norms. The law can shapephysician behaviour, helpto crystallize standards of care, influence utilizationpatterns, and reflect and reinforce patient expectations. In Canada, failure to inform a patient about NIPS,or misinterpretation of NIPS results, could result in a successful "wrongful birth" claim if the patientsubsequently gives birth to a child with a condition that had been detectable. Given that research shows that physicians'decisions are influenced by concerns aboutliability, malpractice law seems likely to encourage increased recommendation and use ofNIPS. Physicians' fiduciaryand negligence-based disclosure standards require they consider both objectivefactors as well as a specific patient's subjectiveand reasonable beliefs,fears, desires, and expectations. Thus, physicians likely must address dominant publicdiscourses and controversies relevant toNIPS. Given the existence of spin, hype, and misinformation about NIPS, there is an increasing need for a robust consent process and, when appropriate, geneticcounselling. In sum, the law will defineand bound the acceptable behaviour of physicians recommending or administeringNIPS, and nudge the technology'simplementation forward. Physicians and policymakers should beaware of the potential impact of these legal norms on both utilization and public expectations.
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