scary test result

This sucks. First the hospital LOST the blood samples for our tests a month ago, then my wife went in for a "quad screen." The results came back good on other fronts, but showing a possibility of Down Syndrome. The research we've read says the vast majority -- more than 90% -- of such results turn out to be "false positives." But another test is needed. If the hospital (well, apparently FedEx) hadn't lost the samples the first time, we would have had some type of results from a different test a month ago.
So now we're pushing to get another, more accurate test fast.
My wife is actually not worked up over it. She knew about the false positives -- she's done lots of research. But obviously we don't want to have to go through this kind of anxiety.
Before getting pregnant this time, we had talked about what we would do if our baby had Down Syndrome. She said she'd want to have it. I was torn -- I like to think that every soul gets a chance, and if that body isn't the healthiest vessel, maybe we'd give it a different chance. But I also trust her on this. And I know Down Syndrome is something you can live with.
Anyway, the chances are the baby is healthy. And fortunately the other, scarier problems did not show up. And, no matter what, you never know what you're getting to get. We have friends with babies facing various challenges.
No matter what, I'll love my child just the same. But I do want to know as much as possible.