They are now doing routine u/s at 12 weeks or so and using that along with a quad screen blood test to be a more accurate screen for chromosomal abnormalities (as opposed to the triple screen test they were doing the first two times I was pregnant - I'd opted out before, but decided to do it this time since I am older now). I never even got to the blood test part, the u/s was so obviously problematic. Even my untrained eye could see that it was severely abnormal. The doctor called it "incompatible with life."
Thank you for your kind thoughts, I appreciate them.