Tissue biopsy with Congo red stain is the gold standard test for the diagnosis of amyloidosis. Biopsy may be taken from an affected organ such as kidney, or from subcutaneous fat or rectal mucosa. There are no established criteria for the diagnosis of familial amyloidosis.
Familial amyloidosis diagnostic study of choice
Primary amyloidosis diagnostic study of choice
Secondary amyloidosis diagnostic study of choice
Cardiac amyloidosis diagnostic study of choice
POEMS syndrome other diagnostic studies
Familial amyloidosis other imaging findings
Thin basement membrane disease diagnostic study of choice
Renal amyloidosis other diagnostic studies