Can a leg muscle biopsy diagnose ATTR-wt amyloidosis?
While biopsies are essential for diagnosing amyloidosis, leg muscle biopsies aren't typically mentioned as a standard diagnostic approach for ATTR-wt (wild-type) amyloidosis.
Common biopsy sites include
* Abdominal fat pad (belly fat)
* Bone marrow
* Inner lip
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Can a leg muscle biopsy diagnose ATTR-wt amyloidosis?
While biopsies are essential for diagnosing amyloidosis, leg muscle biopsies aren't typically mentioned as a standard diagnostic approach for ATTR-wt (wild-type) amyloidosis.
Common biopsy sites include:
* Abdominal fat pad (belly fat)
* Bone marrow
* Inner lip
* Affected organs (heart, kidney, liver, digestive system)
* Rectum
For ATTR-wt amyloidosis specifically, diagnosis often involves a combination of tests. A technetium pyrophosphate (TcPYP) scan is particularly helpful - it can show amyloid deposits in the heart and sometimes confirm ATTR amyloidosis without needing a biopsy at all.
Additional tests help distinguish wild-type from other forms:
* Blood tests to rule out light chain proteins (seen in AL amyloidosis)
* Genetic testing to rule out hereditary ATTR amyloidosis
* Heart function tests like echocardiograms
If you're considering biopsy options, it's worth discussing with your doctor which site would be most appropriate for your specific symptoms and situation.
November 21, 2025