Egg donation can feel like a big leap from "standard" IVF. In practice it reuses the same lab and transfer steps you may already know. What changes is whose ovaries are stimulated, how two people's timelines are coordinated, and the screening and legal work that has to happen before anyone starts an injection. This guide walks through how a donor egg cycle is actually put together, from both sides.
Who considers donor eggs
People usually come to donor eggs for one of a few reasons:
- Their own eggs are unlikely to give a reasonable chance of success, often because of age or a very low ovarian reserve.
- Previous IVF cycles with their own eggs have repeatedly produced few or no usable embryos.
- They have no functioning ovaries, or have gone through early menopause or cancer treatment.
- They carry a serious genetic condition they do not want to pass on.
- They are a male couple or a single man building a family with a gestational carrier.
The decision is rarely only medical. Many people need time to grieve the loss of a genetic link before they feel ready. That is one reason professional bodies push counselling before treatment, covered below.
The two tracks of a donor egg cycle
A donor cycle runs on two parallel tracks that meet in the lab.
Matching and screening
The donor is recruited, assessed and approved, either by the clinic, an agency or an egg bank. The recipient chooses a donor from the profiles available and both sides complete consent.
Donor stimulation and retrieval
The donor takes daily stimulation medication with monitoring scans and blood tests, then has an egg retrieval under sedation. This is the same process an IVF patient goes through with their own eggs.
Fertilization and culture
The eggs are fertilized with the intended parent's or a donor's sperm. Embryos are grown in the lab, and some are usually frozen for later.
Recipient preparation and transfer
The person who will carry the pregnancy takes medication, typically estrogen and then progesterone, to prepare the uterine lining. An embryo is transferred when the lining is ready, and a pregnancy test follows on the date the clinic sets.
Fresh donor cycles versus frozen donor eggs
With a fresh donor cycle, the donor's retrieval and the recipient's preparation are synchronized, or embryos are frozen and transferred later. With frozen donor eggs from a bank, the eggs already exist. They are warmed and fertilized when the recipient is ready, so there is no need to line up two people's cycles. Frozen batches often contain a fixed number of eggs, whereas a fresh cycle's yield is whatever that donor produces. Ask any program how many eggs and embryos you can reasonably expect from each option.
How donors are screened
Screening is where programs differ most. It is also where you have most reason to ask questions. The American Society for Reproductive Medicine's donation guidance (2024) sets out a widely used benchmark:
| Area | What ASRM recommends for egg donors |
|---|---|
| Age | Legal adult, preferably 21 to 34. If a donor is over 34, her age should be disclosed to the recipient during consent. |
| Infectious disease | US rules require tests at an FDA-approved lab within 30 days before, or up to 7 days after, egg retrieval. |
| Genetic carrier screening | At minimum cystic fibrosis, spinal muscular atrophy and hemoglobin disorders. Pan-ethnic expanded screening is preferred, and Fragile X screening may be considered. |
| Family history | A detailed three-generation history. |
| Psychological evaluation | Strongly recommended, by a licensed mental health professional trained in third-party reproduction. |
| Number of cycles | No more than six donation cycles per donor, based on cumulative health risk to her. |
In the UK, the Human Fertilisation and Embryology Authority (HFEA) says donors at licensed clinics have their family history checked for serious inherited disease and are screened for infections including HIV, hepatitis, syphilis and gonorrhoea. It also notes that the HFEA does not require expanded carrier screening. That is a good example of why you should ask any program, at home or abroad, exactly which genetic tests its donors have had, and see the results summary.
Being a carrier of a recessive condition does not usually disqualify a donor. ASRM notes healthy carriers need not be excluded. Instead, recipients should be told the donor's carrier results and offered screening for the sperm provider, so the two can be checked against each other.
What the recipient is checked for
The person carrying the pregnancy has their own work-up. ASRM lists a full medical and reproductive history and physical exam, a formal assessment of the uterine cavity (for example by saline ultrasound), blood type and antibody screen, proof of rubella and varicella immunity, and infectious disease tests. It also strongly recommends a psychoeducational session with a mental health professional. That session usually covers telling a future child about their origins, grief, the limits of donor screening, and what happens if treatment does not work.
Anonymity is not what it used to be
Donor programs use different models. Some are anonymous, some are "open identity" (the child can learn who the donor is later), and some involve a known donor such as a friend or relative. Rules differ sharply by country.
Under UK law, according to the HFEA, a donor-conceived person can request non-identifying information about their donor at 16. At 18 they can request, depending on when the donation took place, the donor's name, date of birth and last known address. A UK donor's eggs can be used to create children in up to ten families, but that limit does not apply once donations are exported, and there is no global cap.
Whatever a program promises, both the HFEA and ASRM warn that consumer DNA testing makes lifelong anonymity hard to guarantee. Plan as though your child may one day be able to identify the donor, whatever the contract says.
Known donors
If a friend or family member donates, ASRM says they should go through the same screening as any other donor. It recommends separate and joint counselling sessions and strongly recommends legal advice. Close-relative donation can raise its own issues, and in the UK some combinations are restricted.
Payment, parenthood and paperwork
How donors are compensated varies widely. In the UK it is illegal to pay egg donors anything other than expenses, which are capped at £985 per donation cycle (HFEA). Other countries allow fixed compensation. That is one reason donor availability and waiting times differ so much. Our comparison of donor egg waiting times goes into this.
Legal parenthood is the part people most often leave too late. The HFEA explains that a donor who donates through a licensed UK clinic has no legal rights or responsibilities toward a resulting child, but a donor used outside a licensed clinic may be treated as a legal parent. Elsewhere, the rules depend on local law and on the country where you will register the birth. If you are going abroad, read our guides to the legal framework for donor eggs abroad and bringing your baby home before you sign anything.
How common is it?
Egg donation is a small but established part of fertility care. In the UK in 2024, about 1,660 egg donors underwent roughly 2,400 donation cycles, and egg donation made up about 2% of all treatment cycles (HFEA Fertility Treatment 2024, published 2026).
Questions to ask any donor egg program
- Which infectious disease and genetic tests have donors had, and when? Can I see the summary?
- Is the donor anonymous, open-identity or known, and what does local law say my child can learn later?
- How many families can one donor's eggs be used for, and is that tracked?
- Fresh or frozen: how many eggs, and roughly how many embryos, should I expect?
- What counselling is offered to me and to the donor?
- Who will be the legal parent at birth here, and in my home country?
- If a cycle produces no embryos, what happens next, and what does it cost?
Unregulated matching
The HFEA warns that private donor-matching websites operate outside its regulation and carry real risks, both legal and medical. Using a licensed clinic, even with a donor you found yourself, gives you screening, counselling and legal protections that informal arrangements do not.
Frequently asked questions
Will my child be genetically related to me if I use donor eggs?
Not to the person whose eggs were replaced. If your partner's sperm is used, the child will be genetically related to your partner. If you carry the pregnancy, you are the gestational and, depending on local law, the legal parent.
Do I still need injections if I am the recipient?
Usually you take medication to prepare your uterine lining, commonly estrogen followed by progesterone, rather than ovarian stimulation. Some programs can time transfers to a natural cycle instead. Your clinic decides which approach suits you.
Can I use the same donor for a sibling later?
Often, if embryos are frozen from the first cycle or the donor is willing and eligible to donate again. In the UK the HFEA notes recipients can reserve donations for siblings, sometimes for a fee. Ask at the start, not after your first child is born.
What if the donor turns out to carry a genetic condition?
ASRM notes that healthy carriers of recessive conditions need not be excluded. The usual step is to screen the sperm provider for the same condition. If both carry it, the program should discuss another donor or embryo testing.
Is donor egg IVF only for older women?
No. It is also used by people with premature ovarian insufficiency, certain genetic conditions, poor results with their own eggs, and male couples or single men working with a gestational carrier.
Sources
- ASRM Practice Committee — Gamete and embryo donation guidance (Fertil Steril, 2024)
- HFEA — Using donated eggs, sperm or embryos in treatment
- HFEA — Fertility treatment 2024: trends and figures (2026)
The Takeaway
The clinical steps of donor egg IVF are familiar. The decisions that shape your family for decades are the screening, the identity model and the legal parenthood, so get those in writing before the donor starts her medication.