Methods The plasma levels of CNP and ADM in 28 cases in stable stage and 31 cases in exacerbated stage of COPD patient and 30 controls were determined with radioimmunoassay.

• 方法用放射免疫法分别测定28例COPD稳定期患者、31例急性加重期患者及30名健康体检者的CNP及ADM水平。