Genetic analysis may help identify silent carriers of [CPVT-] related mutations; once identified, silent carriers may be treated with beta-blockers to reduce the risk of cardiac events and may receive appropriate genetic counseling to assess the risk of transmitting the disease to offspring. Genetic testing that can detect a mutation which may cause cardiac channelopathies, rare, potentially lethal heart conditions. The tests can reduce uncertainty and find the specific causes of cardiac channelopathies, the test can: *Help diagnose a patient's disease *Guide treatment options *Determine whether family members are at risk Patients presenting with: -Stress-induced syncope (eg, exercise or emotion) -Onset of symptoms typically occurs during childhood and adolescence -Family Hx of sudden cardiac death -Exercise-stress-test-induced ventricular ectopy RYR2