Method:The radioimmunoassay(RIA)was used to examine and determine the contents of plasma NPY in patients with HFRS in various satges,compared with the controls.

• 方法：采用放射免疫法检测HFRS各病期血浆NPY含量并与正常健康人比较。结果：HFRS患者血浆NPY水平较正常人组有显著性差异；