BillionToOne, headquartered in Menlo Park, California, is a precision diagnostics company and inventors of the patent-pending molecular counter platform, which increases the resolution of cell-free DNA detection by over a thousandfold. BillionToOne's first product, UNITY, to be released in late spring 2019, will be the first and only noninvasive prenatal screening that tests fetal cell-free DNA for cystic fibrosis (CF) and spinal muscular atrophy (SMA) through a single sample of the mother's blood. BillionToOne was co-founded by Oguzhan Atay, PhD, and David Tao, PhD.