FERTILITY PRESERVATION
Fertility cryopreservation: eggs, sperm and embryos
Cryopreservation stores reproductive material for possible future use. The method, timing, consent and future options differ for eggs, sperm and embryos, and storage cannot guarantee a future pregnancy or live birth.
Laboratory planning
Collection, freezing, identification and storage are documented.
Written consent
Ownership, renewal, transport and disposition choices are reviewed.
Future-use counseling
Age, quantity, warming and treatment options are explained in context.
THREE DIFFERENT PATHWAYS
What may be cryopreserved
The clinical pathway depends on the material being stored and why preservation is being considered. Urgent medical treatment may require a different timeline from elective planning.
Compare egg freezing versus embryo freezing when discussing which material may be stored.
Egg freezing
Usually involves ovarian stimulation, egg retrieval and vitrification. Age at retrieval and the number of mature eggs provide important context.
Egg-freezing price and storage: ViaFERT publishes MXN 50,000 excluding medications and tests, with six months of storage. Published storage renewal is MXN 9,000 per year. Future use of the eggs requires its own clinical plan and quotation; these amounts are not presented as a guaranteed all-in total. Review current prices, inclusions and conditions.
Sperm freezing
May be planned before medical treatment, surgery, travel or fertility care, with backup collection or retrieval discussed when needed.
Embryo freezing
Requires IVF and decisions about gametes, consent, storage, future use and what happens if circumstances change.
FROM DECISION TO STORAGE
Questions to resolve before freezing
Define the goal
Clarify the medical or personal reason, urgency and likely future use.
Estimate the expected yield
Review age, ovarian reserve, semen findings or existing embryos without promising a result.
Complete collection and laboratory steps
Coordinate retrieval or collection, identification, freezing and documentation.
Maintain the storage plan
Keep contact details current and review fees, renewals, transport and disposition instructions.
DECISION SUPPORT
Age, quantity and future use matter
Freezing pauses the biological state of the material at the time it is stored; it does not stop aging of the person or remove every future fertility factor. Some patients may need more than one collection to reach a medically reasonable goal.
- Ask what is being stored and which laboratory method is used.
- Request written policies for renewal, transport, access and disposition.
- Discuss what happens if fewer eggs, sperm or embryos are obtained than expected.
Important limitation: Cryopreservation preserves an option, not a guaranteed outcome. Warming survival, fertilization, embryo development, implantation and live birth remain separate steps with their own uncertainty.
Plan preservation around your timeline
Share the reason for preservation, your age, medical dates and previous results so the team can outline what requires an in-person visit.
CLINICAL ANSWER · MEDICALLY REVIEWED
Cryopreservation of eggs, sperm or embryos: the short answer
What it is
Preservation of reproductive cells or embryos through freezing and storage with a defined indication and informed consent.
What shapes the recommendation
Assessment depends on the material being preserved, age, medical or personal reason, available time and reproductive plan.
Important limit
Preservation retains a future possibility; it does not guarantee survival, fertilization, pregnancy or live birth.
CLEAR, MEDICALLY REVIEWED INFORMATION
Frequently asked questions about fertility cryopreservation
Concise answers to help you prepare for a consultation and understand what requires an individual medical assessment.
What can be cryopreserved?
Depending on the clinical situation, eggs, sperm or embryos may be frozen and stored. Each option has different evaluation, consent, laboratory and future-use considerations.
Does freezing eggs preserve the current chance of pregnancy?
Freezing stores eggs at the age they are retrieved, but it does not guarantee that they will survive warming, fertilize, become embryos or result in a live birth.
When should fertility preservation be discussed?
It may be discussed before treatments that can affect fertility, when delaying parenthood, before selected surgery or when medical and reproductive circumstances make future options a concern.
What should I ask about storage?
Ask about identification and traceability, storage fees, renewal, contact updates, consent changes, transfer to another facility and what happens if the clinic cannot reach you.
CLINICAL DECISION GUIDE
Decisions before fertility preservation
Egg, sperm and embryo cryopreservation can preserve reproductive material for possible future use, but storage is not a guarantee of pregnancy or live birth. Counseling should explain age-related factors, expected response, laboratory steps, storage agreements and what happens when material is later warmed or used.
For egg freezing, age at retrieval and the number of mature eggs stored are important context. For sperm or embryo storage, consent, ownership, renewal, disposition and access policies should be reviewed in writing. Medical conditions and treatment timelines may change how urgently preservation is planned.
- Clarify the material being stored and the laboratory method.
- Review fees, renewal dates, transport and disposition instructions.
- Plan future use, follow-up and alternatives if the expected number is not obtained.