Genetic abnormalities in couple make it more difficult to become pregnant and more likely that a pregnancy ends as a miscarriage.  If there is a suspicion that genetic or chromosomal abnormalities are contributing to infertility, a blood sample from both partners is sent to a laboratory for evaluation. If you or your partner is at risk of passing on a genetic disorder to your child, you may be candidates for preimplantation genetic testing — a procedure that involves IVF. After the eggs are harvested and fertilized, they’re screened for certain genetic problems, although not all genetic problems can be found. Embryos that don’t contain identified problems can be transferred to the uterus.