How accurate are 3d gender scans at 22 weeks?

they are defiantly worth getting but just a tip they dont check the babys sex in 3d they will do it in 2d as apparently it gives a clearer view. i have had 2 done with both my pregnancys and got to find out the sex, but i had them done at 28 weeks not 22 so not sure how accuacy depends on gestation. might be worth waiting until your next scan if you cant find out get in touch with your local scanning clinic and find out about their procedures how they find out the sex and accuracy etc, but i do recommend 4d scans lovely keepsakes.