Embryo transfer

Embryo transfer 123
8-cell embryo for transfer 3 days after fertilization
MeSHD004624

Embryo transfer refers to a step in the process of assisted reproduction in which embryos are placed into the uterus of a female with the intent to establish a pregnancy. This technique - which is often used in connection with in vitro fertilization (IVF) - may be used in humans or in other animals, in which situations and goals may vary.

Embryo transfer can be done at day two or day three, or later in the blastocyst stage, which was first performed in 1984.[1]

Factors that can affect the success of embryo transfer include the endometrial receptivity, embryo quality, and embryo transfer technique.

  1. ^ Cohen J, Simons RF, Fehilly CB, Fishel SB, Edwards RG, Hewitt J, Rowlant GF, Steptoe PC, Webster JM (March 1985). "Birth after replacement of hatching blastocyst cryopreserved at expanded blastocyst stage". Lancet. 1 (8429): 647. doi:10.1016/s0140-6736(85)92194-4. PMID 2857991. S2CID 32746730.