开展新生儿疾病筛查是提高人口素质 ,降低残疾儿发生率的重要措施。先天性甲状腺功能低下症是《中华人民共和国母婴保健法》所规定的新生儿疾病筛查的病症之一。目前国内对甲低的筛查多以ＴＳＨ为指标 ,方法有放免法和酶免法等。酶免法以不污染环境、灵敏度、特异性高等特点 , Neonatal screening is to improve the quality of the population and reduce the incidence of disabled children an important measure. Congenital hypothyroidism is one of the conditions of neonatal screening as defined in the Maternal and Infant Health Care Act of the People’s Republic of China. At present, a low screening of TSH to more indicators, such as radioimmunoassay and enzyme immunoassay. Enzyme-free to not pollute the environment, sensitivity, specificity and higher characteristics,