This is a highly specialized and definitive test to diagnose amyloidosis, a condition where abnormal proteins build up in your tissues. The test involves taking a very small, simple sample of fat tissue from the abdominal wall, which our pathologists then stain and examine. This procedure is the gold-standard, minimally invasive method for confirming the diagnosis. This is a precise, expert-level test that provides the clear, conclusive answer your doctor needs to get to the root of your symptoms.