<br/><br/>多数人着床都是在排卵D6-D7天。下图是国外研究机构的HCG统计,多数人都是在排卵D11天HCG才能达到20,所以翻倍没有你说的4小时那么快的。而且最早抽血能测出来怀孕是HCG>5的时候,从5翻到20也需要几天时间。当HCG在1200以下的时候,正常人翻倍时间是31-72小时之间。
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<br/>这张是单胎妈妈的,第11天HCG中间值为20,第12天为37,13天为59.
<br/>而一般的zzy试纸测试阈值为25.
<br/>且该统计为血HCG值,我们早孕试纸测的是尿的值,尿的值肯定不能跟血值相比,所以11天测到属于幸运,12天测到属于正常,13天如果怀孕大部分的mm都会测到。
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<br/>下面是别人翻译的研究资料:
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<br/>In many early pregnancies, the hCG level will double every 31 to 72 hours. As the pregnancy progresses, hCG levels rise and the doubling time increases. (许多的早孕, 和hCG水平每31-72小时会翻倍, 随着怀孕的进程, HCG水平的上升以及翻倍的时间也会增加。 )
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<br/>"Normal" Doubling Time (“正常”翻倍时间)
<br/>hCG levels ( hCG水平) Doubling Time (翻倍时间)
<br/>Under 1200 mIU/ml (1200 以下) 31-72 hours (31-72小时)
<br/>Between 1200 to 6000 mIU/ml (1200-6000) 72-96 hours (72-96小时)
<br/>Over 6000 mIU/ml (6000 以上) more than 96 hours (大于96小时)
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<br/>hCG levels rise during the first 6 to 10 weeks of pregnancy then decline slowly during the second and third trimesters. (hCG水平在最初的6-10周会上升,之后会逐渐降低)
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<br/>The hCG levels will usually double approximately every 48 hours [ 2 days ] for the first four weeks of pregnancy. (hCG 在最初4周常常每48小时(2天)翻倍一次)
<br/>As pregnancy progresses the doubling time increases. By 6 to 7 weeks gestation beta hCG levels may take as long as 84 hours [ 3½ days ] to double. (随着孕期进程,翻倍时间增加。到6-7周,HCG水平需要84小时(3.5天)才翻倍一次)
<br/>The beta hCG may take more than 48 - 72 hours [ 2 to 3 days ] to double in 15% of normal intrauterine pregnancies.(15%的宫内妊娠HCG的翻倍时间超过48-72小时)
<br/>About 17% of ectopic pregnancies have normal doubling times. (17%的宫外孕有正常的HCG翻倍)