Women who want to select their baby’s sex undergo the costly and cumbersome process of in vitro fertilization (IVF) to create embryos that are also genetically tested before being implanted. Although the testing, broadly referred to as preimplantation genetic diagnosis, or PGD, is often used to test for genetic diseases, it can also identify the sex of the embryos. The IVF/PGD process can cost as much as $15,000 to $20,000 a cycle and isn’t covered by many insurance plans.