Few decisions in family planning carry as much weight as understanding what your DNA, or your embryos’ DNA, may mean for a future child. Genetic testing can offer answers before conception, during fertility treatment, and during pregnancy, but it works best when you understand what each test can and cannot tell you.
At Chedid Grieco, we offer genetic screening and testing as part of our in vitro fertilization care, with laboratory analysis at our FDA- and NYDH-licensed facility in São Paulo, Brazil. Our physicians help you decide which tests fit your situation.
What Is Genetic Diagnostics?
Genetic diagnostics includes medical tests that analyze DNA to identify inherited conditions, fertility-related genetic factors, and chromosomal abnormalities. The right test depends on the stage you are in, as the steps below show.
These tests help you and your physician make informed decisions about treatment, though no test can guarantee a pregnancy or a healthy baby.
Why Is Genetic Testing Important for Family Planning?
Genetic testing can answer two different kinds of questions, one about inherited risk and one about embryo selection.
Inherited Conditions and Fertility
Many inherited conditions, such as sickle cell anemia, Tay-Sachs disease, and cystic fibrosis, are passed down through genes. A screening test can reveal whether either intended parent carries a related gene mutation, and if both carry the same one, they can discuss their options with a physician or genetic counselor. Genetic abnormalities can also affect fertility in men and women, and testing can help clarify treatment options.
Embryo Testing and the Evidence
PGT assesses embryos during IVF before transfer, but it does not help every patient. The American Society for Reproductive Medicine states that the value of PGT-A as a routine screening test for all IVF patients has not been demonstrated, and its effect on miscarriage risk is unclear. We discuss whether it makes sense for your age, history, and goals.
What Genetic Testing Options Are Available?
Several types of genetic diagnostics are used in fertility care, including carrier screening and three types of preimplantation genetic testing.
Carrier Screening
Carrier screening checks for gene mutations linked to inherited conditions. It may be recommended when there is a family history of genetic disorders, and certain ethnic backgrounds carry a higher risk for specific conditions.
Preimplantation Genetic Testing (PGT)
For intended parents undergoing IVF, PGT can assess embryos before transfer. It is divided into three categories.
If PGT is part of your plan, you can read more about preimplantation genetic diagnosis. Those who need donor options alongside genetic screening can also explore our egg donation program.
Frequently Asked Questions About Genetic Diagnostics
The answers below cover the questions we hear most often from patients considering genetic testing.
Who should consider genetic testing before starting fertility treatment?
Genetic testing is worth discussing for anyone planning IVF, egg donation, or another assisted reproductive treatment. It is especially relevant with a personal or family history of inherited conditions, recurrent miscarriage, or unexplained infertility. Carrier screening is often a straightforward first step.
What is the difference between carrier screening and preimplantation genetic testing?
Carrier screening tests each parent’s DNA for inherited gene mutations before or early in family planning. Preimplantation genetic testing analyzes embryos during an IVF cycle to look for chromosomal abnormalities or specific genetic conditions. The two serve different purposes, and we may recommend one, both, or neither.
Does genetic testing improve IVF success rates?
Not for every patient. The American Society for Reproductive Medicine states that the value of PGT-A as a routine screening test for all IVF patients has not been demonstrated. PGT-M can identify embryos with a specific inherited condition, and we review whether testing fits your situation.
Is genetic testing available for LGBTQI+ intended parents?
Yes. We support LGBTQI+ families, and genetic testing is available to all intended parents. When donor eggs or donor sperm are used, we discuss carrier screening for the donor and for the recipient or partner.
Do I need to travel to Brazil for genetic testing?
Laboratory analysis, including PGT as part of an IVF cycle, takes place at our FDA- and NYDH-licensed facility in São Paulo, Brazil. We explain what to expect at each stage when you schedule a consultation, and our fertility tourism support helps patients who travel.
Schedule Your Genetic Diagnostics Consultation With Chedid Grieco
With more than 30 years of experience, over 8,780 babies born, and approximately 1,200 cycles performed each year, our team brings a proven record to every treatment plan. Our FDA- and NYDH-licensed laboratory pairs careful standards with boutique care tailored to you.
Our treatments are conducted at our clinic in Brazil, and you can learn how we support patients who travel through our fertility tourism program. To schedule a consultation, please complete our contact form and a member of our team will be in touch.