Inherited Cardiovascular Genetic Testing (CGx)
Detects: Inherited heart conditions — cardiomyopathies, inherited arrhythmias, and genetic causes of sudden cardiac death
What it is
A panel that looks for gene changes linked to inherited heart disease — conditions like hypertrophic and dilated cardiomyopathy, long QT and other inherited arrhythmias, and genetic causes of unexplained sudden death.
Who it’s for
People with a personal or family history of early or unexplained heart disease, cardiomyopathy, fainting spells, or sudden death in a relative — and their close family members, who may share the same risk.
How it works
Most testing is mail-order: the lab sends a simple cheek-swab or saliva kit to your door, you collect the sample and mail it back in the prepaid envelope, and results go to the ordering provider.
The guidance
The American Heart Association has issued scientific statements supporting genetic testing for inherited cardiovascular disease in appropriate patients, ideally alongside genetic counseling. It can confirm a diagnosis and, importantly, identify at-risk relatives.
Cardiac genetics (CGx) — questions & answers
What does the Cardiac genetics (CGx) test detect?
Inherited heart conditions — cardiomyopathies, inherited arrhythmias, and genetic causes of sudden cardiac death. A panel that looks for gene changes linked to inherited heart disease — conditions like hypertrophic and dilated cardiomyopathy, long QT and other inherited arrhythmias, and genetic causes of unexplained sudden death.
Who should consider Cardiac genetics (CGx) testing?
People with a personal or family history of early or unexplained heart disease, cardiomyopathy, fainting spells, or sudden death in a relative — and their close family members, who may share the same risk.
How does the Cardiac genetics (CGx) test work?
Most testing is mail-order: the lab sends a simple cheek-swab or saliva kit to your door, you collect the sample and mail it back in the prepaid envelope, and results go to the ordering provider.
Do I need a doctor's order for Cardiac genetics (CGx)?
Yes — genetic testing generally requires a provider's order or prescription, and it is subject to insurance or Medicare approval. Check with your provider.