I did the harmony blood test with my son and it was accurate. And this pregnancy I did the panorama and they says I'm having a girl and until this day they still say girl through ultrasound. The test are done upon Dna
I did the panorama test and had them tell me the gender. At my doctors office. There hasn't been a wrong one yet.
I didn't do the gender test but they are quite often wrong from what I've heard. I went for a 4d scan at 16 weeks to find out as I'm inpatient:)