HCG value of more than 500 without a gestational sac is usually normal if it is a normal intrauterine pregnancy; if it is an abnormal intrauterine pregnancy, or ectopic pregnancy, it is not normal.
1. Normal intrauterine pregnancy: If it is a normal intrauterine pregnancy, when the fertilized egg first implanted, the blood HCG will be elevated, and the value will sometimes reach more than 500; at this time, because the gestational sac is too small, it is not easy to explore under the ultrasound, so the gestational sac will not be seen, which is normal, and can be closely observed.
2. Abnormal intrauterine pregnancy: If the pregnancy is abnormal intrauterine pregnancy, such as the gestational sac is not well developed, the blood HCG 500, can not see the gestational sac is not normal. The blood HCG should be rechecked every other day and the ultrasound should be rechecked regularly to observe the development of the gestational sac and take necessary measures in time.
3. Ectopic pregnancy: in the early stage of gestational sac implantation, if it does not implant in the uterine cavity, but implant in parts outside the uterine cavity, such as: fallopian tube, peritoneum, uterine horn, etc., due to the small size of the gestational sac, the ultrasound can not be seen, which is also not normal. Close observation is needed to clarify the diagnosis and then target the treatment.
Women who have blood HCG 500 or more without a gestational sac need to actively cooperate with the doctor for examination to prevent accidents.