Progesterone rises after pregnancy, as after ovulation, if the fertilized egg is in bed and has a gestational state, it transforms the menstrual corpus luteum into the gestational corpus luteum. The initial progesterone is mainly secreted by the ovaries, and when the fertilized egg is in bed, the placental mass also secretes a certain amount of progesterone, and the amount of progesterone can indicate intrauterine pregnancy. The amount of progesterone can indicate intrauterine pregnancy. A progesterone value of more than 25 ng/ml indicates intrauterine pregnancy. If the progesterone level is less than 15 ng/ml, it is possible that the pregnancy is ectopic. If the progesterone level is less than 5 ng/ml, the progesterone level is too low and it is possible that there is no pregnancy at all or that the embryo has stopped developing completely. Therefore, the progesterone level is used to determine the location of the embryo and the success of the embryonic pregnancy through dynamic observation. Content source: Dr. You Lai