No abnormal infiltrates in the bone marrow but states 15 percent plasma cells means?

Abnormal result: 15% plasma cells is abnormally high. This may be due to several different causes. Sometimes it may be due to an acute infection, or another illness in the body. A more serious cause is Multiple Myeloma. There is also Asymptomatic Multiple Myeloma in which the patient has: normal x-rays, red blood count, blood calcium and kidney function. Only some of these will develop Multiple Myeloma.