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How to talk to your child’s doctor about genetic testing

Genetic testing can feel like a big topic to bring up with your child’s doctor. Here are some tips to help you feel more confident and prepared for the conversation.

May 19, 2025 5 min read

Familiarize yourself with the conditions that can benefit from genetic testing and types of testing.

Sharing your ‘why,’ as well as all of your child’s symptoms, will help give the doctor the full picture. Some symptoms and conditions where genetic testing might be appropriate are:

  • Epilepsy or seizures 
  • Delays in developmental milestones (like rolling over, walking, or talking) 
  • Intellectual disability 
  • Birth defects or congenital anomalies (such as cleft palate or heart defects) 
  • Growth issues or failure to thrive 
  • Unusual muscle tone (either too low or too high) 
  • Muscle or movement differences (like hypotonia, dystonia, or spasticity) 
  • Cerebral palsy 
  • Significant hearing or vision challenges 
  • Autism spectrum disorder 
  • Concerns about a metabolic or mitochondrial condition 

There are also medical guidelines you can mention as reason to consider genetic testing:

The American College of Medical Genetics and Genomics recommends exome or genome testing as a first-line test for kids with developmental delays, intellectual disabilities, and congenital anomalies.

The National Society of Genetic Counselors recommends exome or genome sequencing for anyone with unexplained epilepsy. This guideline is supported by the American Epilepsy Society.

The International Precision Child Health Partnership recommends rapid exome or genome as a first-line test for NICU patients with unexplained hypotonia.

Check your coverage with your insurance provider. If the test is covered, make sure to let your doctor know.

It’s becoming more common for insurance companies to cover genetic testing, and yours may include it. While GeneDx accepts most insurance plans (including Medicare, Medicaid, and Tricare), it’s still a good idea to call your insurance provider and make sure, based on your child’s symptoms and specific plan.

If you’re not sure what to ask, we’ve included a few helpful resources to guide that conversation. Knowing what’s covered ahead of time can help you avoid any surprises.

You can find a list of many of the GeneDx in-network insurance providers here, but be sure to double check with your own provider as well.

This webinar can help you better understand the ins and outs of your insurance. It’s led by GeneDx Patient Advocacy Liaison Gay Grossman.

Our Epilepsy Partnership Program helps kids with epilepsy symptoms get the testing they need. If your child’s doctor recommends exome testing, this program may cover the cost–even if your insurance doesn’t, or if a claim gets denied.

Share your child’s health story and tell their doctor why genetic testing is important to your family.

A genetic diagnosis can help your child get better and faster care, make it easier to treat them, and potentially cut down on healthcare costs. But there are other reasons you can share with your child’s doctor, too. Those answers can unlock more personalized support for your child, so that you can:

  • Work with your doctor to create a care or treatment plan for your child’s needs 
  • Connect with families that have children with the same diagnosis, so you can find support from others in similar situations 
  • Search for potential clinical trials that could help with your child’s genetic condition 
  • Get insurance coverage for medical equipment or therapies 
  • Feel greater peace of mind, knowing there’s a specific reason for your child’s symptoms 

Be sure to ask about exome or genome testing.

When thinking about genetic testing, keep in mind that not all genetic tests are the same and some look at genetic information in different ways. A panel test, for example, typically analyzes a handful to a few hundred genes that are associated with a certain medical issue.

In comparison, exome and genome tests can look for changes in approximately 20,000 genes at once making them more comprehensive overall. Be sure to ask your doctor if exome or genome testing is most likely to identify a diagnosis for your child’s medical issues.

And always remember: “Let’s just wait and see” isn’t your only choice.

Getting the right rare disease diagnosis often takes about 5 years and 16+ tests–but it doesn’t have to be that way for your child. It’s often necessary to advocate for your child and ask for what you want or need when you’re faced with “giving things time.”

There’s no harm in telling your provider you would prefer not to wait or asking, “What are we waiting for?” If your provider still doesn’t feel comfortable ordering the test, you can also seek a second opinion. Your child’s doctor may even suggest another doctor that has more specific experience with your child’s symptoms, making it easier to transfer medical records over to them.   

References: 1. Manickam K, McClain MR, Demmer LA, et al. Genet Med. 2021;23(11):2029-2037. 2. Smith L, Malinowski J, Ceulemans S, et al. J Genet Couns. 2022 Oct 24. 3. Morton SU, Christodoulou J, Costain G, et al. JAMA Neurol. 2022 Apr 1;79(4):405-412. 4. Marwaha S, Knowles JW, and Ashley EA. A guide for the diagnosis of rare and undiagnosed disease: beyond the exome. Genome Med. 2022 Feb 28;14(1):23. doi: 10.1186/s13073-022-01026-w. 5. Hayeems RZ, et al. Genet Med. 2022 Mar;24(3):694-702. doi: 10.1016/j.gim.2021.11.005.