My wife has (and has had for more than a year) Chromogranin A levels of 2000 and above, as well as orthostatic hypotension. She is under treatment by a primary care doctor and a variety of specialists (endocrinologist, vascular surgeon, neurologist, nephrologist) at a local and well-regarded medical center. She is a survivor of ECMO. My interest in posting on this blog is to question what types of tests people with similar Chromogranin A levels have had, or should have.