Vanishing Twin - NIPT

TW: pregnancy, vanishing twin

Looking for others who have been through something similar!

I’m currently 14 weeks pregnant. I was originally pregnant with twins, but Baby B became a vanishing twin. They were in separate gestational sacs, and there was a confirmed absence of a heartbeat for Baby B about 3.5 weeks before I had my Myriad NIPT done.

I just got my results back, and the test says the baby is a boy. I spoke with the genetic counselor, though, and she told me not to put too much stock in the gender result because the Y chromosome could be coming from the vanishing twin instead of the surviving baby.

Has anyone else had a vanishing twin and gotten a boy result on NIPT? Did it end up being accurate, or was the Y chromosome from the vanishing twin? I’d really appreciate hearing your experiences while I wait for my anatomy scan!