Prenatal Genetic Testing and Screening: Know Your Options

Now that you are pregnant, you might start hearing a lot about prenatal genetic testing and screening. It sounds a bit daunting, but don't sweat it! These tests are all about giving you a peek into your little one’s health before they make their grand entrance. In this article, we'll break down each test so you can have a better idea of your options.

What is Prenatal Screening for Genetics?

Prenatal genetic screening is a way for expecting parents to get the lowdown on their baby's health before they even arrive. These tests can check for certain genetic conditions that might run in the family or pop up out of nowhere. Prenatal screening tests usually happen early in pregnancy and typically involve blood tests or even a quick ultrasound.

Now, don’t freak out! Testing doesn't mean you have to make any big decisions right away; it’s more about being informed. If a test result does come back that's concerning, you and your healthcare provider can chat about what it might mean and what your options are. It’s all about giving you peace of mind and helping you prepare for whatever comes your way. 

What Are the Different Types of Prenatal Diagnostic Tests?

Prenatal diagnostic tests can give you a closer look at your baby's health and development during pregnancy. Here's a briefing on the different types of tests to help you feel confident and informed about your options.

What is Non-Invasive Prenatal Testing (NIPT)?

Non-Invasive Prenatal Testing (NIPT) is essentially the "chill" way to check on your baby in utero. You'll have a blood test done that looks for certain genetic conditions by analyzing tiny bits of DNA floating around in your bloodstream. As the name implies, this noninvasive prenatal screening doesn't involve needles in your belly or anything crazy. 

People usually go for NIPT to get the scoop on things like Down syndrome or other chromosomal issues. It’s pretty accurate (it has a detection rate of 99% for conditions like Down syndrome) and can be done early in pregnancy, which is a win for anxious parents wanting peace of mind!

What is Chorionic Villus Sampling (CVS)?

Chorionic Villus Sampling, or CVS for short, is a prenatal test that helps check for certain genetic disorders in a baby. It involves taking a tiny sample of the placenta, which contains some of the baby's genetic material.

This usually happens between the 10th and 12th weeks of pregnancy. It’s pretty quick, and some folks say it feels like a pinch. The results can help parents make informed decisions about their pregnancy, which is super important. Just keep in mind that it does come with some risks, so chatting with a doctor is a must!

What is Amniocentesis, and when is it performed?

Amniocentesis is a test that involves a doctor taking a tiny sample of the amniotic fluid surrounding a baby in the womb. They do this with a thin needle, and it sounds scarier than it is! Usually, it's performed when a woman is between 14 to 20 weeks pregnant.

This test is mainly done to check for any genetic abnormalities or certain birth defects, especially if there's a family history or other risk factors. Just remember, like any test, it has pros and cons.

What are Carrier Screening Tests?

Carrier Screening Tests are like a health check-up for your genes. They help determine if you carry any genes for certain inherited conditions, even if you don’t have them yourself. It’s super important if you and your partner consider having kids because it can give you a heads-up about potential risks.

Getting tested is pretty straightforward; a simple saliva or blood sample does the trick. If you do find out you’re a carrier for something, don’t freak out! It just opens up a convo with your doctor about your options and what to do next.

Things to Consider Before Opting for Genetic Screening during Pregnancy

With so many screening and diagnostic tests, you might be feeling overwhelmed! No worries; we're here to help you think through things. Here are some things to consider before making any decisions:

  • Types of genetic tests. Compare the tests to one another and think about what's most important to you. Some tests check for particular genetic disorders, while others give a broader picture. Knowing what you're signing up for can help you make a more informed choice.

  • Considering results. You might get some info that’s a bit overwhelming, and it's super important to think about how you’d handle that. Are you ready for the possibility of finding out something challenging? Chatting with your partner or a professional might be wise to ensure you’re both on the same page.

  • Costs. Some screenings can be pretty pricey, and insurance might not cover everything. Make sure you check with your provider so you don’t end up with a hefty bill down the road. 

Lastly, think about the emotional impact. This whole process can stir up a lot of feelings, so be sure you’ve got a solid support system in place. Whether it’s friends, family, or a counselor, having folks to lean on can really help!

A couple consulting with a genetic counselor discussing prenatal genetic screening results

Making an Appointment with a Genetic Counselor

Want to dive deeper into your options? Genetic counselors are great at explaining all the testing options available, especially regarding screening for birth defects and understanding common genetic conditions. They can walk you through how tests can tell you about certain types of genetic disorders that may run in your family.

Getting a grip on screening and prenatal options can help you feel more prepared. It’s all about knowing what tests can help you make the best choices for your family. A genetic counselor is your go-to for learning more about the different genetic risks in pregnancy.

Conclusion

Whether you opt for prenatal genetic screening tests or choose not to, the point is that YOU have options. It’s totally normal to have a million questions bouncing around in your head. Just take it one step at a time. Your healthcare team is there to help you understand everything, so don’t hesitate to reach out for clarification. Remember, screening tests are not 100 percent accurate either. You got this!

Jessica Lagrone, CCCE

Jessica is a certified childbirth educator, doula, and mom of three girls. With her first, Jessica was so frustrated at all the information out there about birth and postpartum life that seemed to contradict itself. It was this reality that inspired her to create Balanced Families® - a place for truly balanced, un-biased and evidence-based information for families.

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