Just wondering if anyone else had this or will have this done in 1st Tri. The OB Coordinator at my practice said it is fairly new, and non-invasive. It has a 91% chance of accuracy, but not really sure what that means. I know that it tests for various defects + Downs, but I assume it just provides a risk status and then you can choose whether to undergo further diagnostics. It is done between 10-15 weeks. I am 36 so it was offered to me, but this my third baby and I don't believe I did these tests for the other two likely because I was under 35. Any experiences? Thanks!!