The exact HCG value of staph varies from person to person: 1. 60%-70% of staph will have a dramatic and abnormal increase in HCG value. For example, at 7-8 weeks of gestation, the HCG value is comparable to the normal pregnancy level, but after 7-8 weeks, the HCG value will increase dramatically, and some of the gravida can be as high as 400000-500000 (IU/L) or even higher; 2. In a few gravida, the HCG value will remain at a low level due to the stagnation of embryonic development.