early gender test??

I saw someone post on here a few weeks ago about a blood test they did from home to detect gender. They ordered it through a lab online for around $80. It can be preformed as early as 9 weeks. I can't remember the name of the test and am not having luck searching online. Does anyone know about this test or know the name of it? Has anyone else done it?? I'm interested in possibly doing it and would appreciate any info! Thanks ladies.