Blood test at 12 weeks, tells you chromosomes and baby sex

I was wondering if anyone else has done that blood test. I did it, and it was great. Now I don't have to have an amino and I wasn't worried for the NT scan. We found out there were no chromosome disorders at 12.5 weeks. Also, we know for sure about the baby's sex already! I know not all insurance plans cover it, so maybe that's why I haven't seen a post about it. Mine only covered it because I had a TFMR last year. My OB said its still kind of new, but will soon replace the more risky tests for new mom-to-be's!