【摘要】 本文对800例正常足月新生儿的总T4浓度进行详细分析，比较了0－2天，2－3天，3－7天，7－28天各组数值间的关系，同时以各组复查率作对照，提出在0－2天进行甲低筛查是可行的，扩大了甲低筛查范围，使筛查更具普遍性。早期进行甲低筛查并给予治疗，以提高我国人口素质。更多还原

【Abstract】 In the paper we have studied the total T4 concentration on 800 cases normal newborn,and compared the relations among 0-2day, 2-3 day, 3-7 day and 7-28 day,with the recheck rate as controls respectively. We think newborn hypothyroid screening is feasible in 0-2 day,it extend the range of newborn hypothyroid screening and make the screening more universal. So make early screening and give treatment,it will improve the quality of our nation.更多还原