Comprehensive Details About
Genetic Testing
Along with the exuberant joy and excitement of pregnancy, expectant parents worry about the health of their baby, a natural concern that’s heightened if you have a family history of genetic disorders.
The doctors at VERITAS OBGYN offer genetic testing for parents who would like answers about genetic and chromosomal problems.
Should I Consider Genetic Testing?
Deciding about genetic testing is highly personal, and sometimes quite difficult. The doctors at VERITAS OBGYN simply want you to know that they offer genetic testing, along with all the support and information you need to make the choice that’s best for you and your baby.
What is Carrier Screening?
Carrier screening determines whether either parent carries a genetic mutation known to cause an inherited disorder such as cystic fibrosis. This test is often done before you’re pregnant, but it is also performed in the first or second trimesters.
When both parents carry the same genetic mutation, there’s a:
- 25% chance their baby will inherit normal genes
- 50% chance their baby will carry the disorder, but not be affected by the disorder
- 25% chance their baby will inherit the disorder
Although the results may not offer a definitive answer, carrier screening helps guide decisions about genetic testing for your baby.
What is Prenatal Genetic Screening?
Genetic screening shows whether your baby is at risk for certain birth defects, such as Down syndrome, neural tube defects, and other chromosomal defects. A positive test means your baby has a higher risk compared to the general population. However, you’ll need to follow up with genetic testing to learn whether your baby has the problem.
Screening procedures are safe for you and your baby because they’re done with blood tests and ultrasound imaging. Not all tests are covered by insurance, however, so you’ll need to check with your provider. It’s also important to get guidance from your doctor because each test is patient specific.
What Types of Genetic Tests are Available?
Genetic testing accurately determines whether your baby has a genetic problem. These are examples of genetic tests available at VERITAS OBGYN:
- Chorionic Villus Sampling (CVS): During CVS, your doctor takes a small sample of cells from the placenta. The placenta contains the same DNA as your baby, so it reveals chromosomal abnormalities and genetic disorders.
- Amniocentesis: Your doctor at VERITAS OBGYN uses a long, thin needle to withdraw a sample of the amniotic fluid surrounding the baby. The amniotic fluid contains cells carrying the baby’s genetic information.
- Reveal® SNP Microarray: This genetic test is offered to couples who have had multiple miscarriages. It analyzes the baby’s chromosomes for changes that might explain why you had a miscarriage.
- BRCAssure® and VistaSeq®: Several tests are available that identify genetic mutations known to increase your risk for cancer, such as BRCA1 and BRCA2 for breast and ovarian cancer.
Our Specialists
Virginia Elizabeth Mclean, MD, FACOG
Dr. Virginia McLean, MD is an Obstetrics & Gynecology Specialist in New York, NY. Her office accepts telehealth appointments.
Dr. Mclean graduated from the Medical University of South Carolina College of Medicine in 2014. She works in Port Jefferson Station, NY and 8 other locations and specializes in Obstetrics & Gynecology.
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