Genedx Holding Corp. launched Genomedx Prenatal, its whole genome sequencing test, to provide more definitive diagnoses of the causes of fetal abnormalities identified by ultrasound. By combining the company’s decade of experience in prenatal exome testing and its massive Genedx Infinity rare disease dataset, the test can determine not just whether a pregnancy has a risk of a genetic disorder but whether the fetus actually has a genetic disorder.