EDIT: ANSWERED ALREADY

I have seen so many posts about a blood test. It seems to me that this blood test is drawn from the mother's vein, and it carrys info about baby such as sex, and diagnostic info?

Am I wrong?

This test must be new, I have never heard of it! I thought the only ways to get info about baby were super invasive intrauterine tests!

Someone explain!

P.s. my first appointment is dec 9th, the day before the 13 week mark. I want to ask about the test, if I'm gonna have my blood being sucked anyway. Lmao