Ariosa Diagnostics has signed a deal with LabCorp to bring the startup's Down syndrome-related prenatal blood test to labs around the country. The California company launched the Harmony Prenatal Test earlier this year, and it's designed to detect the genetic condition Trisomy 21, which has been linked to Down syndrome, Forbes reports. The deal with LabCorp will get Ariosa's noninvasive screening into more than 1,000 labs around the U.S., and, at $795 a pop, the test is cheaper than rival Sequenom's $1,900 MaterniT21. Report