怀孕9周CRL正常值是多少？

来自单楠医生的专业解答，快打开看看是否又获得了新的知识点～

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https://m.baidu.com/bd_page_type=1/baiduid=3C3C3BDA5828B643AA6AC95AB416E817/t=mip/tc?ct=54&lid=34644699162646&module=mip&cst=112&clk_extra=%7B%22pageid%22%3A%2234644699162646%22%2C%22searchID%22%3A%2234644699162646%22%2C%22nPageID%22%3A%2234644699162646%22%2C%22mip_logid%22%3A%2234644699162646%22%2C%22masterpage_type%22%3A%22self%22%2C%22originalUrl%22%3A%22http%3A%5C%2F%5C%2Fmip.club.xywy.com%5C%2Fmip%5C%2F20160215%5C%2F122355513.htm%22%2C%22srcid%22%3A%22landingpage%22%2C%22name%22%3A%22A%5Cu533a%5Cu6b63%5Cu6587%5Cu4e0b%5Cu65b9%5Cu4e2d%5Cu95f4%5Cu5c55%5Cu5f00%5Cu6309%5Cu94ae%22%2C%22id%22%3A%22new_expand_content%22%7D&tcreq4log=1

寻医问药网

病情分析：你好根据你的描述，crl是有一定范围和测量误差的，一般二十多到三十都是差不多九周左右

单楠

副主任医师

提示：本内容仅作参考，不能代替面诊，如有不适请尽快线下就医

问题描述：您好：医生，怀孕九周，CRL等于2.3，等于2.5，等于3.2，等于3.5，等于3.8（CM）看了好几个孕妇的九周B超单，为什么CRL不一样，报告都是写九周？（没有一个具体范围吗）早期B超误差不会这样大吧？医生还说月经不准拿早期B超算预产期？