How will my doctor know if i have multiple myeloma?

BMB + labs: Myeloma can be suspected by "crab" symptoms including abnormalities found on x-rays or other imaging studies and laboratory studies. A definitive diagnosis is usually dependent on a bone marrow biopsy.

Labs, xrays: There are a series of blood and urine tests that will give the doctor a good idea if you have the disease. These are usually followed by x-rays looking for tell-tale signs of myeloma and a bone marrow test which would identify the cancer cells themselves.