Prenatal diagnostic testing Prenatal diagnostic testing

Prenatal diagnostic testing 

Find out if your baby has a condition caused by chromosomal changes or confirm the results of a screening test—before you give birth

What is prenatal diagnostic testing?

Unlike a screening test that assesses the level of risk, prenatal diagnostic testing offers definitive answers. Know whether or not your developing baby has a condition caused by changes to their chromosomes. 

Chromosomes explained

Chromosomes carry important genetic material in the form of genes that contain instructions for the body to help it develop and grow. 

How chromosomal conditions occur 

Chromosomal conditions occur when there is a change in the number, size, or structure of your baby’s chromosomes. These changes can affect growth, development, or the ability of body systems to function. 

How chromosomal conditions develop

Chromosomal changes are usually spontaneous and occur when the egg or sperm cells are forming during conception. Sometimes, however, chromosomal changes are inherited from one or both parents. 

When to consider prenatal diagnostic testing

If you are pregnant and would like to know if your baby has a chromosomal condition, prenatal diagnostic testing is available to you. Your healthcare provider may recommend testing if: 

  • a previous screening test showed an increased risk for a chromosomal condition
  • you have a history of an affected pregnancy or a child with a chromosomal condition 

What to expect

Your doctor will collect a small sample of your developing baby’s cells in order to analyze their chromosomes. Samples may be collected in one of two ways: 

Chorionic villus sampling (CVS) is a first-trimester procedure performed to collect a small sample of cells from the placenta using a thin plastic tube inserted through your cervix or a thin needle inserted into your belly (an ultrasound is used to guide the needle safely)*. 

Amniocentesis is a second-trimester procedure performed to collect a small sample of amniotic fluid using a thin needle inserted into your belly (an ultrasound is used to guide the needle safely)*. 

Simple billing, no surprise


We’ll work directly with your insurance company so you don’t have to. Typically people pay between $0 and $100 out of pocket. Learn more.


Don’t have insurance? We offer $450 pricing and accept HSA/FSA payments. Learn more.

Prenatal diagnostic testing

More than a test:
Built-in support network

You don’t have to figure it out alone. Genetics experts are available to guide you through the testing process, help you make sense of your results, and plan a path forward.

Prenatal diagnostic testing

Your questions, answered

Our resource center offers:

  • details on how the testing process works
  • downloadable guides that explain specific genetic diseases
  • an explanation of possible results and what they could mean for you

* While all pregnancies carry risk of miscarriage, there is a small additional risk (less than 1%) associated with these tests due to the invasive nature of these procedures. Your healthcare provider can help you understand the process and risks involved.