Just now saw your response. Besides the 5-HIAA test, I had an abdominopelvic MRI with contrast, which was negative. My bloodwork (CMP and CBC) was normal, so the nurse practitioner said this rules out all metastatic cancers. I wonder if she's correct. My only other imaging order is a CT with IV contrast; it hasn't been completed yet. Meanwhile, I haven't gained weight, though I'm trying; and I have the same symptoms.