Embryo Freezing

Embryo Freezing at Birla Fertility & IVF

Many a time, multiple embryos are formed during an IVF or IVF-ICSI cycle. In such situations, excess embryos can be frozen and used in future frozen embryo transfer cycles, giving couples and women another chance of pregnancy without needing to go through ovarian stimulation and egg collection again. Embryo freezing is also recommended for couples if either partner as an autoimmune condition which can impact their fertility or has to undergo medical treatments like chemotherapy. Success rates of frozen embryo transfers are similar to fresh embryo transfers.

At Birla Fertility & IVF, we use the latest fast-freezing technique (vitrification) for embryo freezing and frozen embryo transfer cycles for those who wish to use their frozen embryos from previous fertility treatments. All frozen embryos are stored on site at our state-of-the-art laboratory in accordance with ICMR (Indian Council of Medical Research) guidelines.

Why Freeze Embryos?

Embryo freezing is recommended for couples in the following situations:

If excess good-quality embryos are formed in an IVF or IVF-ICSI cycle

If the IVF cycle needs to be cancelled after egg collection for any reason like unsuitable response to ovarian stimulation

If either partner has a medical condition or is facing a medical treatment which increases the risk of infertility

Embryo Freezing Process

Embryo freezing involves the following steps:

Eggs are collected from the female partner after a cycle of ovarian stimulation. The collected eggs are fertilised with sperm in the laboratory and monitored for signs of growth (fertilisation). The resulting embryos are cultured for 2-5 days and carefully examined under a microscope. Only good-quality embryos are selected for the freezing process.

The selected embryos are placed in a protective solution (cryoprotectants). These help to remove water from within the cells of the embryo and prevent ice crystal formation during the freezing process.

The embryos are then rapidly frozen using liquid nitrogen at a temperature below -196°C and stored in tanks of liquid nitrogen till they need to be used.

Experts Speak

Frequently Asked Questions

Medical guidelines state that embryos can be frozen for 10 years. However, this can be extended for up to 55 years in special circumstances.

Frozen embryo transfers have been proven to be as effective as fresh embryo transfers to become pregnant.

Advances in cryopreservation (freezing) technology and use of cryoprotectants have significantly improved survival rates of embryos being frozen. As survival of the embryo through the freezing and thawing process significantly depends on its quality, only good quality embryos are selected for this process.

If you wish to transfer your frozen embryos to another clinic or city, both you and your partner will be required to give your informed consent by filling the relevant forms. These will be explained to you in further detail by your fertility care team.

Patient Testimonials

Birla Fertility helped us find hope again. We had two failed IVF cycles before coming here. The doctors counselled us and told us to try a FET cycle. They were with us at every step. We became parents two weeks back and we are so happy! Thank you for helping us become a family!

Priya and Anuj

Our dreams came true the day we decided to visit Birla Fertility & IVF and their team. After years of unsuccessful attempts and other treatments, we decided to switch fertility doctors and start IVF with Birla Fertility. Everyone from the front office to financial planners, nurses and specialists have exceeded our expectations with their in-depth knowledge of the process, flexibility in schedules and empathy with every step. I’m very grateful to Birla Fertility & IVF for all the support and attention.

Ranjana and Rajkumar

Our Services

To Know More

Speak to our experts and take your first steps towards parenthood. To book an appointment or to make an enquiry, please leave your details and we will get back to you.

    Thank you for your message. We will be in touch with you shortly.
    Thank you for your message. We will be in touch with you shortly.

    You can also reach us at


    Learn more about fertility

    No, Blog To Show