first trimester screening tests

[carisa]

My gestational carrier is 12 weeks pregnant with our twins. She had the first trimester screening done 3 days ago. I'm not sure if they did the NT scan, or just blood work. I know that they did do an ultrasound at the perinatologist, and she did blood work. The results came back today and were pretty encouraging. We had 1 in 2100 chance of having downs, and 1 in 430 of having other chromosome age related problems.

My question is whether or not the blood test for twins is even accurate. I have always heard that it is not accurate with twins. Maybe they did do the NT scan as well. That would make more sense to me.

[stephjim]

If they did an ultrasound the same day then most likely it was an NT scan. My peritonalogist gave me results right there of the scan. I had to wait a week for the blood.