NT scan- yes or no?

I had blood drawn with the NT, but this is different. For the NT blood work, they are looking at the free hcg and papp-a levels. The materniT 21 test actually looks at fetal DNA in the mom's blood and just became available last October.

Okay, since you know what a vanishing twin is, I can admit I had one. My first born had a twin. The sac was there at our first u/s at 9 weeks, but no baby. It's easier to just tell people I miscarried the second baby.
My son is perfectly healthy, always has been. My second son, who was twinless, was the one born with a mild birth defect that required surgery to fix.

We will be doing the NT scan. My husband is 45 and has had testicular cancer. I'm 32 - but the issues can be just as much paternal as maternal.