Originally Posted by DavidHC

Yes, there are three general types, I believe: primary, secondary (both of which are not hereditary) and familial. I don't know about your last question, perhaps someone more knowledgeable than I can offer information, but I can say that urine tests are not accurate for diagnosing amyloidosis. The most accurate test that's minimally invasive but quite accurate, upwards of 90%, is a fat pad biopsy. This can detect amyloid deposits. The most accurate is to biopsy the organ tissue itself, if a particular organ, say the kidney, is suspected, but that's obviously much more invasive. I hope this helps.