What it is
Genetic heart testing looks at a person's DNA for changes (called variants) in genes linked to inherited heart conditions. Two groups often discussed with young athletes are arrhythmia conditions, which affect the heart's electrical rhythm, and cardiomyopathies, which affect the heart muscle.
Genetic tests show risk or carrier status. They do not diagnose heart disease on their own. Results have to be interpreted alongside personal and family history, a physical exam, imaging, and bloodwork by a qualified cardiologist, electrophysiologist, or genetic counselor.
Results can be unclear. A negative result does not rule out risk, since not every cause is known or detectable. A variant of uncertain significance is not a diagnosis; it means experts don't yet know whether the change matters.
How it’s traditionally been approached
Screening for heart conditions in young athletes has traditionally started with a health history, a family history, and a physical exam. Many families are asked whether anyone close has had fainting spells, unexplained seizures, an early heart problem, or a sudden unexplained death at a young age.
Depending on what is found, a clinician may recommend further evaluation, such as an electrocardiogram (ECG), an echocardiogram, or rhythm monitoring. These tools look at how the heart is working right now, while genetic testing looks at inherited factors that may not show up on a single test.
Genetic testing has typically been considered when there is a concerning family history, an unexplained cardiac event, or findings that suggest an inherited condition. Whether it is appropriate for a particular family is a decision for a licensed clinician after an evaluation.
How the right cardiologist may help
The right cardiologist, particularly one with experience in inherited arrhythmia and cardiomyopathy, may help you sort out whether genetic testing makes sense for your athlete and family. A first visit generally involves reviewing your child's health history, collecting a detailed family tree, and discussing any symptoms like fainting, palpitations, or chest discomfort during exertion.
A provider may also explain which other evaluations could be part of the picture, and may involve a genetic counselor before and after any test. Genetic counseling can help families understand what results could and could not mean. If a disease-causing variant is found, cascade testing, which means offering testing to blood relatives, may be discussed so that other family members can be evaluated.
Questions you might bring: Is genetic testing appropriate for us, and why or why not? What could a negative result or a variant of uncertain significance mean? How would results be shared with family? What would be reviewed regarding sports participation? Ask about insurance coverage, and about life, disability, and long-term-care insurance before testing.
The whole-person view
Body, mind, and stress affect each other. For a young athlete, waiting on screening results or hearing about inherited risk can bring worry, and parents and siblings may feel it too. Those feelings are understandable and are part of the whole picture alongside the medical questions.
Some families find extra support helpful. Somatic Experiences offers body-based support that some people use to work with stress held in the body, and Therapists.plus can connect you with talk therapy for worry, grief, or big decisions. These are complements to, not replacements for, care from your cardiology team.
Somatic Experiences: nervous system regulation →Somatic Experiences: embodiment and movement →Therapists.plus: anxiety panic and ocd →Therapists.plus: mind body connection →
Keep in mind
- This page is educational only and is not medical advice; licensed professionals should guide any decisions about testing, sports, or care.
- Genetic tests show risk or carrier status and do not diagnose on their own. A negative result doesn't rule out risk, and no test can promise to prevent a cardiac event.
- GINA protects against genetic discrimination in US health insurance and employment, but it does not cover life, disability, or long-term-care insurance, so ask about those before testing. Coverage for testing varies by insurer, state, and diagnosis, so confirm with your insurer and provider.
- For an emergency, such as collapse, fainting during exercise, or chest pain, call 911. If you or someone you love is in crisis, call or text 988.
Cardiologists who often help
Get matched privatelyFrequently asked questions
What is genetic heart testing for young athletes?
Genetic heart testing is a DNA test that looks for variants in genes linked to inherited heart conditions, such as arrhythmias and cardiomyopathies. It shows risk or carrier status rather than diagnosing disease. A qualified cardiologist or genetic counselor interprets results alongside history, exams, and imaging.
Does a negative genetic heart test mean my child is safe?
No, a negative result does not rule out risk. Not all genetic causes are known or detectable, and some heart conditions are not inherited. Your child's cardiologist can explain what other evaluations may still matter.
What is a variant of uncertain significance?
A variant of uncertain significance is a genetic change whose effect on health isn't yet understood. It is not a diagnosis. Its meaning may be clarified over time, so ask your genetic counselor or cardiologist how it will be followed.
Who should consider genetic heart testing before a cardiac event?
It is often discussed when there is a family history of early cardiac events, unexplained sudden death, fainting, or a known inherited condition. Whether it fits your family is a decision for a licensed clinician after an evaluation. A genetic counselor can help you weigh the pros and cons.
Will genetic testing affect our insurance?
In the US, GINA protects against genetic discrimination in health insurance and employment. It does not cover life, disability, or long-term-care insurance. Ask about those policies before testing, and confirm coverage for the test with your insurer and provider.
What is cascade testing and why does it matter for families?
Cascade testing means offering genetic testing to relatives after a disease-causing variant is found in one family member. It helps identify who else may carry the same variant so they can talk with a clinician about evaluation. A genetic counselor can help guide how and when to share this information.
Educational resource. CardioGenes shares general information and connects people with independent cardiologists. It is not medical advice, diagnosis or treatment. Talk with a licensed professional about your health.