Beta[2] microglobulin in tuberculous pleural effusion

Beta[2] microglobulin [B[2] m] levels in serum and pleural fluid from 14 patients with tuberculous pleural effusion were studied and compared with those of other pleural disorders. The level of pleural fluid B[2] m was so high in patients with tuberculous pleural effusion that we suggested that concomitant pleural fluid and serum B[2] m measurements should be considered when pleural effusion of tuberculous origin is suspected