Methods: Sample of heel blood collected from newborn after 72 hours, and dropped on stipulated filter paper to determine the TSH concentration of blood according to DELFIA.

• 方法新生儿出生后72h采足跟血,滴在规定的滤纸上。采用时间分辨荧光免疫测量法(DELFIA法)测定TSH浓度。