What should you know about embryo vitrification?

After fertilisation and laboratory development, an embryology team places the embryo in protective solutions and cools it very rapidly. This limits the formation of ice crystals that can damage cells. The embryo is then kept in a labelled storage container under very low temperatures. Vitrification does not improve an embryo or change its genetic characteristics; it preserves it at the stage reached before freezing.

Ask the fertility team which embryos are suitable for freezing, how they will be identified, and how storage consent works. Before a future transfer, the laboratory warms an embryo and checks its condition before the clinical team plans the uterine lining and transfer. Keep contact details current and discuss how long storage is intended to continue, including what should happen if your plans change.

Contact the clinic promptly for severe pain, heavy bleeding, fever, breathing difficulty, or symptoms after an egg-collection procedure. After a transfer, seek urgent advice for severe abdominal pain, fainting, or heavy bleeding. These symptoms need assessment because they can relate to the treatment cycle rather than to the frozen embryo itself.

Which embryos are being frozen, and how will each one be identified? What will warming and transfer involve? Who can explain storage consent, future use, and changes to my treatment plan?