URL of this page: //www.nlm.nih.gov/medlineplus/ency/article/003841.htm

Abdominal wall fat pad biopsy

An abdominal wall fat pad biopsy is the removal of a small part of the abdominal wall fat pad.

How the Test is Performed

Needle aspiration is the most common method of taking an abdominal wall fat pad biopsy.

The health care provider cleans the skin on your belly area. Numbing medicine may be applied on the area. A needle is placed through the skin and into the fat pad under the skin. A small piece of the fat pad is removed with the needle. It is sent to a laboratory for analysis.

How to Prepare for the Test

No special preparation is usually necessary.

How the Test will Feel

You may have some mild discomfort or feel pressure when the needle is inserted. Afterward, the area may feel tender or be bruised for several days.

Why the Test is Performed

The procedure is done most often to test for amyloidosis.

Normal Results

The fat pad tissues are normal.

What Abnormal Results Mean

In the case of amyloidosis, abnormal results mean there is amyloid. This is a protein that collects in tissues and impairs organ and tissue function.


There is a slight risk of infection, bruising, or slight bleeding.

Alternative Names

Abdominal wall biopsy; Biopsy - abdominal wall fat pad


Gertz MA. Amyloidosis. In: Goldman L, Schafer AI, eds. Goldman's Cecil Medicine. 25th ed. Philadelphia, PA: Elsevier Saunders; 2016:chap 188.

Update Date 2/8/2015

Related MedlinePlus Health Topics