Happy news - blood tests are back and everything is looking good. This fairly routine test at 16 weeks looks for markers that would raise the risk for neural tube defects (such as Spina Bifida or a missing brain and skull). Additionally, they tested for levels of hCG and estriol, giving me my personalized risk factor for Down syndrome, which is low for my age range.
All in all, I have a less than 1 in 5,000 chance of having a baby with Down Sydrome, and a less than one in 3,300 chance of having a baby with Spina Bifida -- which are both really really good news. Yeah for a healthy baby Edelbrock!