Colloidal gold method is a method of early pregnancy test strips to detect pregnancy, early pregnancy test strips to detect women’s pregnancy is more convenient, 35 days after pregnancy HCG can rise to more than 2500IU / L, early pregnancy test strips colloidal gold method can be measured. HCG is human chorionic gonadotropin, early pregnancy test paper using double antibody sandwich one-step technology, colloidal gold as an indicator marker, detection of HCG concentration in the urine, to diagnose whether a woman is pregnant. Generally, the value of HCG in normal people is less than 5, if it is more than 5, it is considered to be pregnant, and if it is more than 10, it is basically certain that you are pregnant. However, if the time of conception is too short and the HCG value is low, it may not be detected by early pregnancy test. And 35 days after pregnancy HCG can rise to more than 2500IU / L, general early pregnancy test paper colloidal gold method can be accurately measured. The accuracy of pregnancy test paper is not 100%, there is a certain degree of error, the best way is to go to the hospital, check the blood HCG, ultrasound, clear whether the pregnancy. The best way is to go to the hospital, check the blood HCG, ultrasound, to determine whether you are pregnant or not.