Blood and Other Tests • A complete blood count (CBC) reveals anemia in two-thirds of patients. • An increased total serum protein may be one of the first clues to the presence of an M-protein. An elevated serum calcium occurs in about 30 percent of patients. The level of serum creatinine (a measure of kidney function) is abnormal in more than one-fourth of patients at diagnosis. The serum beta-2 microglobulin level is helpful in prognosis . • Serum protein electrophoresis shows an M-protein "spike" in 80 percent of patients. Immunoelectrophoresis or immunofixation is necessary to determine the type of M-protein. The amount of M-protein is measured by serum protein electrophoresis or by the measurement of IgG or IgA, the two major types of M-protein found in multiple myeloma . • Ninety-nine percent of patients with multiple myeloma will have an M-protein in the blood or in the urine. If the level of M-protein in the blood is high or if the patient has blurred vision or bleeding,