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绒毛膜促性腺激素(hCG或HCG)是由胎盘合体滋养叶细胞合成的一种糖蛋白激素,在受精卵发育至第6～8天即可用高灵敏度的检验方法在孕妇的血或尿中测得。因此,实验室检出早孕的最早日期大约在预定月经来潮前的一周,即末次月经后的第22～24天。妊娠早期,尿中HCG的排出量不断增加,其高峰出现在停经60～80天,然后下降到较低的水平,直至产前两周稍有回升,产后7～10天从血和尿中消失。HCG的检测方法有生物学法和免疫学法两种,现临床较多采用免疫学测定法。兹分别介绍如下。一、生物学测定方法
Chorionic gonadotropin (hCG or HCG) is a glycoprotein hormone synthesized by the placental syncytiotrophoblast follicles and can be detected in pregnant women’s blood or urine by the highly sensitive test when the fertilized egg is developed from day 6 to day 8 Got it. Therefore, the earliest date of detection of early pregnancy in the laboratory is approximately one week before the intended period of menstruation, ie 22 to 24 days after the last menstrual period. Early pregnancy, urinary HCG emissions continue to increase, the peak appeared in menopause 60 to 80 days, and then dropped to a lower level, until a slight rebound two weeks before delivery, 7 to 10 days after childbirth disappeared from the blood and urine . HCG detection methods are biological and immunological two, clinical more immunological assay. Here are the introduction. First, the biological determination method