Urine B2-microglobulin in patients with macroglobulinemia Waldenström

The level of B2-microglobulin in the urine was determined by a radioimmunoassay technique in six patients with Waldenström's macroglobulinemia. In 50% of the patients the B2-microglobulin in the urine was significantly increased. In none of the analyzed patients any glomerular malfunction, as measured by serum creatinine and creatinine clearance, was observed.