How much is normal blood HCG?

Normal women in the body blood HCG index should be within 10IU/L, at this time that there is no pregnancy phenomenon. And women after pregnancy HCG index will appear fold increase, usually doubled every day, pregnant about a week may reach 10000IU/L, at this time that has been pregnant. However, if ectopic pregnancy occurs, the index will also rise, but the increase is not obvious.