 [ Symptoms ] i am 23 and i have low testosterone are testosterone injections my best option or is there a long term fix  are there any things i would need to consider before having testosterone injections performed given that i am 23 years old [ Disease ] tests used to diagnose an arrhythmia or determine its cause include electrocardiogram holter monitor event monitor stress test echocardiogram cardiac catheterization electrophysiology study eps head up tilt table test