How thick should the endometrium be to increase the chances of implantation?
To best optimize the chances of implantation, studies have shown that the endometrial thickness should be 6 mm or more. Best implantation rates in in vitro fertilization have been shown to be with lining thickness of 10 mm or more but there are many studies to show that implantation can occur with endometrial thickness as low as 5 mm – just not as easily.