病情分析：HCG正常参考值:血HCG的正常值<10μg/L，β-HCG的正常值<3.1μg/L。根据美国怀胎协会采用只供参考的的hCG数字停经3.5周-50mIU/ml停经4周:5-426mIU/ml停经5周:18-7,340mIU/ml停经6周:1,080-56,500mIU/ml停经7-8周:7，650-229,000mIU/ml停经9-12周:25,700-288,000mIU/ml停经13-16周:13,300-254,000mIU/ml停经17-24周:4,060-165,400mIU/ml停经25-40周:3,640-117,000mIU/ml闭经后妇女:<9.5mIU/ml
