I listened to a radio show my mom told me about and it was helpful in understanding more about prenatal testing so I thought I'd pass it along. The host is kind of annoying and she interrupts the experts so some questions don't get answered Chat Icon but it's still helpful.

For some reason I can't insert a web link so here's the link to cut and paste:
https://thedianerehmshow.org/shows/2015-08-19/understanding-the-changing-landscape-of-prenatal-testing

It's the Diane Rehm show on NPR and the episode is called Understanding the Changing Landscape of Prenatal Testing.