They may also take a magnetic resonance imaging (MRI) scan, a positron emission tomography (PET) scan, and a computed tomography (CT) scan of your body to check for any damage in your bones. You will need to wear a hospital gown and lie down in an imaging machine so your doctor can get high quality images of your bones for analysis. The bone marrow sample will consist of the removal of a small amount of fluid and a small amount of solid tissue from your bone. The sample is usually done on your pelvic bone. Your doctor will numb the area with a local anesthetic and use a needle to draw the sample. If you experiencing organ malfunctioning or organ failure, your doctor may recommend testing a sample of your abdominal fat. Your abdominal area will be numbed with local anesthetic and your doctor will remove a small sample of fat with a needle. The sample will then be tested to determine if you have low M proteins, which may be caused by multiple myeloma.

Summary:
Allow your doctor to X-ray your arms, legs, spine, pelvis, and skull. Let your doctor take a bone marrow sample with a needle. Provide a sample of fat from your abdomen, if needed.