HCG refers to human chorionic gonadotropin, which is normally normal at less than 10 mIU/mL and elevated in pregnancy. If the patient is not pregnant, human chorionic gonadotropin values less than 10 mIU/mL are usually normal. If the patient is pregnant, human chorionic gonadotropin values are around 25mI-100,000mIU/mL depending on the week of gestation and appear to double every other day, which is normal. Normally, human chorionic gonadotropin values in pregnant women rise by more than 66% every other day. If the level of human chorionic gonadotropin value in the patient’s blood is not doubled enough, it may be the result of ectopic pregnancy or miscarriage. If the level of human chorionic gonadotropin value in the patient’s blood is greater than 100,000 mIU/mL, it may be the result of gravida. If you suspect that you are pregnant, it is recommended that you go to the hospital promptly for examination.