Inside Unity Fetal Risk Screen: The Methods Behind the Result
Overview
When counseling patients about prenatal screening, understanding how a test works matters.
Join Devon Chandler-Brown, Associate Director of Development at BillionToOne, for a closer look at how Unity Fetal Risk Screen was designed and built. He’ll explain how the assay measures and quantifies molecular counts in a maternal blood sample to calculate fetal risk for recessive conditions.
Vicky Hsieh, Medical Science Liaison and Genetic Counselor, will join Devon to bring a counseling perspective to the science, focusing on what the methodology means for interpreting results and answering patients’ questions. Together, they’ll help providers connect their understanding of the test to the conversations they have in clinical practice.
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Upcoming Events
Access on-demand sessions from previous UNITY events featuring clinical insights, real-world cases, and the latest in genetic screening.

Improving Practice in OB/GYN 2026 Annual Symposium - NYU Langone Health

Dartmouth Health NNEPQIN Fall Conference
