The normal reference value of human chorionic gonadotropin at 4 weeks of pregnancy is about 100 U/L. The result varies from person to person, and will be higher than this reference value if the conception is early, slightly lower than the normal reference value if the conception is late, and at 200 U/L in twin pregnancies. Therefore, it is not possible to determine whether the level of chorionic gonadotropin is normal based on the results of one test. If the chorionic gonadotropin doubles every other day, the chorionic gonadotropin is within the normal range. Just keep your mood relaxed after pregnancy, don’t worry too much and have regular checkups.