how accurate is gender with genetic testing

Katie • 20 yrs old ☀️ Leonardo 10.16.18 👶🏻💙

Today I got blood work done because the doctor offered me genetic testing. I’m only 19 but I thought I might as well do it, I think it was covered by my insurance. but anyway, I’m 12w2d if that makes a difference. how accurate is gender with the genetic testing?