Comment on

• Noninvasive prenatal testing for fetal trisomies in a routinely screened first-trimester population.

  Nicolaides KH, Syngelaki A, Ashoor G, Birdir C, Touzet G. Nicolaides KH, et al. Am J Obstet Gynecol. 2012 Nov;207(5):374.e1-6. doi: 10.1016/j.ajog.2012.08.033. Epub 2012 Sep 19. Am J Obstet Gynecol. 2012. PMID: 23107079
• Still a screening test: more attention needed to noninvasive prenatal test false-positive rates.

  Reiss RE, Cherry AM. Reiss RE, et al. Am J Obstet Gynecol. 2013 Aug;209(2):160-1. doi: 10.1016/j.ajog.2013.04.021. Epub 2013 Apr 11. Am J Obstet Gynecol. 2013. PMID: 23583784 No abstract available.