How much hcg in the blood is a sign of pregnancy

Blood hcg more than 5U/L, representing the possibility of pregnancy is relatively large, not pregnant when the blood hcg is generally between 0-5IU/L, sperm and egg after 1-2 days, blood hcg will increase, pregnant 4~5 weeks, blood hcc can reach 5-50IU/L, early pregnancy hcg value will continue to rise rapidly, every two days can double growth. hcg growth rate of ectopic pregnancy has important diagnostic significance.