已知,产后哺乳持续两年的妇女其分娩后闭经时间较分娩后1-3个月即断奶者长的多。血清生乳素水平升高常伴有闭经和不排卵。本工作测定了已恢复月经的和闭经的两组长期哺乳妇女的血清生乳素浓度,试图阐明高生乳素水平与产后闭经的关系。在39例产后1-24个月的哺乳妇女,于哺乳前及开始吸吮后30分钟,分别取血借助于第二抗体技术用放射免疫测定法测定血清生乳素、黄体生成素 It is known that women who have been breastfeeding for at least two years after childbirth have a much longer amenorrhea after childbirth than 1-3 months after giving birth. Increased serum levels of lactogen often accompanied by amenorrhea and ovulation. This study measured serum lactogen concentrations in two groups of long-term breastfeeding women who had resumed menstruation and amenorrhea, in an attempt to elucidate the relationship between high lactogen levels and postpartum amenorrhea. Thirty-nine lactating women, 1-24 months postpartum, pre-lactation and 30 minutes after the start of sucking, respectively, and blood was collected for determination of serum lactogen, luteinizing hormone