There is no genetic test for hEDS. If you get the genetic testing it's basically to rule out the other types... that being said my official diagnosis appointment involved seeing a pain management doctor that specializes in EDS and hypermobility. He basically checked a bunch of stuff and had me stretch in a bunch of different ways. I've watched Izzy Kornblau's videos on YouTube and learned quite a bit since being diagnosed. She has a video of testing criteria

I was diagnosed when I went to get tested for a bleeding disorder, and when that came back negative, the doctor had me answer some questions on how I scar (raised scars) and if I bruise easily and then had me to the skin stretch and then different stretches and concluded that I have hEDS.