What does a myocardial biopsy detect? it sounds dangerous.

Muscle disease: There are a variety of illnesses, some very treatable and some not, which are accurately diagnosed only by taking a snippet the size of a hangnail from the inside of the right atrium of your heart, via a vein. It sounds scary but it's often the key either to greatly improved health, or the knowledge you need to plan your future, as is your right. If offered, i'd not hesitate a moment.