IVF success rate is generally 35-45%, the highest energy up to 60%. IVF is now in the role of ovulation induction drugs get more eggs, so can form multiple embryos, only one transplant 2-3 IVF embryos, the remaining embryos can be frozen, refrigerated shelf life of up to several years, frozen embryos recovery after transplantation in 25-30% success rate, so one failure after another frozen embryo transplants, so that the cumulative success rate can increase, but also save a lot of costs.
If the first number of eggs and embryos in vitro the quality is not so good or no remaining can be stored, it should start a new course of treatment.
