COVID-19 UPDATE: All elective surgeries and procedures are cancelled until further notice. Please see our latest visitor policy. If you think you may have been exposed or have symptoms, please call your provider before visiting one of our locations. For more information, please visit our online COVID-19 Information Center or call the Montefiore-Einstein COVID-19 Hotline: 1-844-444-CV19 (1-844-444-2819).

ACTUALIZACIÓN SOBRE EL COVID-19: Todas las cirugías y operaciones quedan canceladas hasta nuevo aviso. Lea nuestras nuevas normas para visitas. Si cree que podría haber estado en contacto con la enfermedad o si presenta síntomas, por favor llame a su proveedor antes de acudir a cualquiera de nuestros centros. Más información en nuestro Centro de Información en Línea sobre el COVID-19 o llamando a la línea informativa Montefiore-Einstein de COVID-19: 1-844-444-CV19 (1-844-444-2819).

Home >  OB/GYN & Women's Health >  Services and Treatments >  Infertility - Reproductive Medicine >  Treatments and Procedures >  Cryopreservation

OB/GYN & Women's Health


Embryo freezing, or "cryopreservation," is a recommended means of saving and storing surplus embryos after the transfer for use in future fertility cycles. Freezing embryos may start as early as one day and as many as six days after a successful IVF fertilization.

The cryopreservation procedure involves placing the embryos into a series of cryoprotectant solutions to assist with the removal of intracellular water. The cooling process takes place in a controlled environment of -196 degrees Celsius for freezing and storing the frozen embryos, which are monitored and housed onsite in secure containers. If and when couples choose to use the frozen embryos, the thawing and application to the uterus will occur via a Frozen Embryo Transfer (FET) procedure.

Montefiore's Institute for Reproductive Medicine and Health also offers oocyte (egg) cryopreservation for those with a medical history of endometriosis, premature ovarian failure, genetic disorders, or early menopause, as well as those who are about to undergo radiation treatment or chemotherapy. Women in their early thirties may also wish to exercise the option of freezing their eggs for having children later in life. Likewise, couples who do not wish to have embryos frozen for ethical or religious reasons may also benefit from freezing eggs for future use.