Blastocyst Transfer



Development of embryos passes through various stages of development in the laboratory . Develpoment process happens over 5 to 6 days after fertilisation. These stages are stages of cleavage, morula formation, and blastocyst stage. Generally, a fully expanded blastocyst is formed on day 5 after fertilisation. In some cases, it is also formed on day 6 after fertilisation.


Embryos are transferred either at cleavage stage or at blastocyst stage. The process of implantation generally happens at blastocyst stage. Over years blastocyst transfer has become a preferred embryo transfer stage . Advantages of blastocyst transfer are-

  1. Blastocyst transfer is more in synchronisation with endometrial lining and its growth and development than cleavage stage embryo.
  2. Blastocyst stage in itself provides a method of auto selection of embryos as not all embryos make up to blastocyst stage.
  3. Blastocyst transfer has better implantation rates and hence, better pregnancy rates than cleavage state embryos.
  4. The risk of ectopic pregnancy is less with blastocyst stage embryos than cleavage stage embryos.

Dr. Puneet Arora is one of the best infertility specialists in Gurugram, India with a successful career of more than 20 years. Dr. Puneet is an expert in this field and is one of the best IVF specialist and Gynecologist in Delhi/NCR. – She may explain more about Blastocyst in case you wish to discuss further.