EF

Egg Freezing (Oocyte Cryopreservation)

Complete patient guide — what it is, who it's for, the process, costs, and which countries offer it.

Overview

Egg freezing involves the same ovarian stimulation and retrieval process as IVF, but the eggs are vitrified (fast-frozen) and stored for future use rather than fertilized immediately. Modern vitrification techniques have dramatically improved survival rates since 2010.

Most fertility specialists recommend freezing before age 35 for optimal egg quality, though egg freezing is increasingly common in the late 30s and early 40s.

Frequently Asked Questions

How many eggs should I freeze?

Medical guidelines recommend approximately 10-15 eggs for one pregnancy chance. Older ages require more — e.g., at 38, you may need 20-25 eggs.

What is the best age to freeze eggs?

The optimal window is ages 25-35 when egg quality is highest. However, freezing can be done up to age 40 with medical consultation.

Are there side effects from ovarian stimulation?

Common side effects include bloating, slight weight gain, and breast tenderness. Severe OHSS is rare. Your doctor monitors and adjusts medication accordingly.

How long can eggs be stored?

Eggs can be stored for 5-10 years depending on the clinic package. Eggs frozen in liquid nitrogen (-196°C) maintain their quality indefinitely.

What hidden costs should I watch for?

Ask whether the package includes thawing, fertilization, and embryo transfer fees — some clinics charge these separately when you use the eggs.

Is egg retrieval painful?

Performed under light sedation for 15-20 minutes. You won't feel pain during retrieval. Mild cramping for 1-2 days afterward is normal.