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For a long time, it was believed that fresh oocytes offered better results than vitrified ones. It was a fairly widespread belief, and many patients came to their appointments with that concern.
Today we know that this idea is no longer valid.
Thanks to advances in vitrification and warming protocols, the results obtained with vitrified oocytes are comparable to those of fresh oocytes when the procedure is performed in an experienced laboratory.
And this is where the key lies.
What really happens when an oocyte is vitrified?
Vitrification is an ultra-rapid cryopreservation technique that prevents the formation of ice crystals inside the oocyte. This makes it possible to preserve its structure and maintain its viability until it needs to be used.
When the time for treatment arrives, the oocyte undergoes a carefully controlled warming process that allows its recovery for fertilization through IVF.
Beyond success rates, vitrified oocytes offer something very important: peace of mind and flexibility.
They allow:
- No need to depend on synchronization between donor and recipient
- Reduced unexpected cancellations
- Treatment planning with greater security
- Immediate availability when working with an established bank
In clinical practice, this means less uncertainty and more control over the process.
Real advantages for patients
When these steps are carried out using optimized protocols, the following are achieved:
- High oocyte survival rates
- Good fertilization rates
- Proper embryonic development
- Pregnancy rates comparable to cycles with fresh oocytes
It is not just about freezing an oocyte. It is about how it is done.
Do they reduce the chances of pregnancy?
Current scientific evidence indicates that there are no significant differences in pregnancy rates between fresh and vitrified oocytes when appropriate protocols are applied.
The determining factor is not whether the oocyte is vitrified or not. What truly determines outcomes is:
- Laboratory quality
- The experience of the embryology
- Process standardization
- Quality control and traceability
In specialized centers and experienced banks, results are consistent and reliable.
The importance of choosing wisely
When a patient begins treatment with donor oocytes, she needs clear information based on real data, not outdated myths.
At Ovobank, vitrification and warming protocols are optimized to maximize oocyte survival and maintain high quality standards in every batch.
Because in assisted reproduction, technical details make the difference.