Reciprocal IVF Explained: How Shared Motherhood Works
Learn how reciprocal IVF works, including who provides the eggs, who carries the pregnancy, donor sperm, treatment steps, success factors, costs, and legal considerations.
Reciprocal IVF allows two partners to take different biological roles in creating the same pregnancy.
One partner provides the eggs. Those eggs are fertilized with donor sperm through IVF. An embryo is then transferred to the other partner, who carries the pregnancy and gives birth.
It is sometimes called shared motherhood or shared parenthood, and it can be an option for lesbian couples and some other LGBTQ+ couples where both partners want to participate physically in the conception process. The HFEA describes reciprocal IVF in exactly this way: eggs are collected from one partner, fertilized with donor sperm, and the resulting embryo is transferred to the other partner.
The basic idea is simple. The medical process is more involved.
How does reciprocal IVF work?
Reciprocal IVF follows many of the same steps as conventional IVF.
First, the partner providing the eggs takes fertility medication to stimulate the ovaries so that several follicles develop.
The clinic monitors the response with ultrasound and, depending on the protocol, blood tests.
When the follicles are ready, the eggs are collected through an egg-retrieval procedure, usually under sedation or anesthesia.
The eggs are then fertilized with donor sperm in the laboratory.
If embryos develop appropriately, one is typically transferred to the uterus of the other partner. If implantation occurs, that partner carries the pregnancy.
Suitable remaining embryos may be frozen for future use.
One partner provides the genetics, the other provides the pregnancy
This is what makes reciprocal IVF different from standard donor-sperm IUI or IVF.
The partner providing the eggs has the genetic connection to the child.
The partner receiving the embryo has the gestational connection because she carries the pregnancy and gives birth.
Both partners therefore participate biologically, but in different ways.
For some couples, that shared participation is deeply meaningful.
For others, it is not important enough to justify the additional cost and medical treatment compared with simpler options such as donor-sperm IUI.
Neither response is more valid.
How do you decide who provides the eggs?
Sometimes the answer is based mainly on preference.
One partner may strongly want to experience pregnancy while the other prefers providing the eggs.
In other couples, both would be comfortable with either role.
That is where clinical factors can become useful.
A fertility specialist may consider age, ovarian reserve, general reproductive health, medical history, and pregnancy-related risks when helping a couple decide who is better suited to provide eggs and who is better suited to carry.
Current ASRM guidance notes that outcomes can be improved when clinical criteria are used to help choose these roles rather than assigning them arbitrarily.
The emotional preference still matters, but it can be considered alongside medical information.
Both partners should usually have a fertility assessment
Because both people are participating medically, each partner may need a different type of evaluation.
The egg-providing partner may have ovarian-reserve testing, ultrasound, infectious-disease screening, and other IVF-related assessment.
The partner planning to carry the pregnancy may have a uterine evaluation and a prepregnancy health review.
ACOG recommends prepregnancy counseling for people planning pregnancy, including LGBTQ+ patients, with review of medical conditions, medications, vaccinations, family history, lifestyle factors, and genetic-screening considerations.
Completing these assessments before choosing roles can sometimes change the plan.
Donor sperm is still a major decision
Reciprocal IVF does not remove the need to choose donor sperm.
You will still need to decide whether to use:
- a sperm-bank donor;
- an identity-release or open-ID donor;
- or a known or identified donor.
That choice can affect screening, future access to identity, donor siblings, legal planning, and the kind of information your child may have later.
The donor-selection process should therefore be considered separately from the decision to use reciprocal IVF.
Genetic screening should be considered carefully
The genetic contributors to the child are the egg provider and the sperm donor.
That means their carrier-screening results may need to be considered together.
A donor who carries a recessive genetic condition is not automatically unsuitable.
The more important question is whether the egg provider carries a relevant pathogenic variant affecting the same condition.
A clinic or genetic counselor can interpret this far more reliably than trying to compare donor profiles yourselves.
What happens during ovarian stimulation?
The egg-providing partner usually takes hormone injections for roughly one to two weeks.
The goal is to mature several follicles during the same cycle.
Monitoring appointments allow the clinic to see how the ovaries are responding and adjust medication where necessary.
When the follicles reach the appropriate stage, a trigger medication is given and egg retrieval is scheduled.
The HFEA describes egg retrieval in reciprocal IVF as typically taking around half an hour under sedation or general anesthesia.
The egg provider may experience bloating, fatigue, pelvic discomfort, or other temporary effects from stimulation and retrieval.
What happens to the embryos?
After retrieval, the eggs are fertilized with donor sperm.
The laboratory monitors embryo development over the following days.
Depending on the treatment plan, an embryo may be transferred after several days or frozen for transfer later.
Remaining suitable embryos can often be frozen for future treatment.
That can be particularly useful if you hope to have siblings using the same egg provider and sperm donor.
Why is single-embryo transfer important?
Transferring more than one embryo increases the chance of twins or other multiple pregnancies.
Multiple pregnancy carries greater medical risk for both the pregnant person and babies.
ASRM's 2026 LGBTQ+ family-building guidance reports a notable twin rate in reciprocal-IVF studies and recommends following standard single-embryo-transfer guidance where appropriate.
So “two embryos for a better chance” is not necessarily the safer or better strategy.
The clinic should recommend the number of embryos based on current guidelines and your individual circumstances.
How successful is reciprocal IVF?
Success depends heavily on the age and ovarian function of the egg-providing partner, embryo quality, sperm factors, uterine factors, and the clinic's laboratory performance.
Current ASRM guidance cites limited but generally favorable data, with reported overall success rates around 60% in some reciprocal-IVF studies. It also notes that outcomes can be better when the roles of egg provider and gestational partner are selected using clinical criteria.
That figure should not be treated as your personal chance of success.
Individual results can vary substantially.
A clinic should give you an estimate based on your own ages, health, ovarian reserve, embryo development, and treatment plan.
Is reciprocal IVF more successful than IUI?
That is not really the right comparison.
IUI and reciprocal IVF solve different problems.
IUI with donor sperm is much simpler: one partner's egg is fertilized inside her body and she carries the pregnancy herself.
Reciprocal IVF specifically allows one partner to provide the egg while the other carries.
So even if IVF has higher success per treatment cycle in some circumstances, reciprocal IVF also involves much more medication, monitoring, laboratory work, egg retrieval, and expense.
If both partners do not particularly care about sharing the biological roles, donor-sperm IUI may be a simpler starting point when medically appropriate.
Is reciprocal IVF only for lesbian couples?
No.
It is commonly associated with lesbian couples, but it may also be relevant to other LGBTQ+ couples where one partner can provide eggs and the other can carry a pregnancy.
HFEA uses the broader term “same-sex female or other LGBTQIA+ couple” in its description of reciprocal IVF.
The exact clinical options depend on each person's reproductive anatomy and health rather than identity alone.
What screening is needed?
Screening requirements vary by jurisdiction and clinic.
The egg-providing partner will usually undergo health and fertility assessment, while the gestational partner will be evaluated for pregnancy.
The HFEA notes that UK reciprocal-IVF patients undergo health screening similar to other IVF patients. It also notes that UK rules changed in November 2024 so the egg-providing partner is no longer automatically required to undergo the enhanced screening previously applied to unrelated egg donors.
That is a UK-specific regulatory example.
Requirements in the U.S., EU member states, and elsewhere differ, so your clinic should explain what applies locally.
Legal parenthood needs attention too
Reciprocal IVF creates a genetic connection with one partner and a gestational connection with the other.
That does not mean legal parenthood automatically follows the same pattern everywhere.
Rules can depend on country, state, marital or relationship status, clinic procedures, donor conception law, and whether additional parentage steps are required.
For that reason, couples should understand the legal position before treatment—especially if the sperm donor is known or the treatment crosses borders.
Do not assume that genetic connection, giving birth, marriage, or appearing on paperwork always produces the same legal result in every jurisdiction.
Reciprocal IVF can be more expensive than simpler donor-conception routes
The cost usually includes standard IVF expenses rather than just donor sperm.
Depending on the clinic and country, that can include:
- fertility assessments;
- stimulation medication;
- monitoring;
- egg retrieval;
- donor sperm;
- laboratory fertilization;
- embryo culture;
- embryo transfer;
- freezing and storage;
- and additional genetic testing if chosen.
Because both partners undergo medical care, there may also be additional consultation and testing fees.
If cost is a major consideration, ask the clinic for the complete reciprocal-IVF package, not simply its headline IVF price.
Think about future siblings before the first transfer
Reciprocal IVF can create several possibilities for future children.
You might use frozen embryos from the same egg provider and sperm donor.
You could switch roles later, so the partner who carried the first pregnancy provides eggs for another child.
You could use the same sperm donor for both pregnancies.
There is no need to decide the entire family plan immediately, but discussing it early can help with donor-sperm availability and embryo storage.
If using a sperm-bank donor, purchasing or reserving additional vials may preserve sibling options.
Think about donor identity separately from shared motherhood
It is easy for reciprocal IVF itself to become the focus because both mothers have a biological role.
But your child still has a sperm donor.
They may eventually want information about him, his family, medical history, ancestry, donor siblings, or identity.
Whether you use a known donor, identity-release donor, or nonidentified donor can therefore remain an important long-term decision.
Shared biological participation between the parents does not make the donor side of the child's genetic story irrelevant.
Banbino can help if you want an identified sperm donor
Some couples prefer the structured simplicity of selecting donor sperm through a bank.
Others want to know more about the individual providing the sperm.
For couples considering reciprocal IVF with an identified donor, Banbino can help with the discovery stage by allowing people to consider donor background, location, physical characteristics, motivation, family-building intentions, and openness to future contact.
If you find someone you want to explore donation with, the next stage should move into professional screening and fertility treatment.
The platform helps with finding the person; the clinic manages the IVF.
Is reciprocal IVF right for you?
Reciprocal IVF may be especially appealing if both partners strongly want a physical role in creating the pregnancy.
One contributes the genetics.
The other experiences pregnancy and birth.
But it is not something a lesbian couple needs to do in order for both people to be equally legitimate parents.
It involves more medical treatment and usually greater expense than donor-sperm IUI.
A useful decision is therefore not:
“Which option makes us both more like biological mothers?”
It is:
“Does sharing these biological roles matter enough to us to make reciprocal IVF the family-building route we want?”
If the answer is yes, reciprocal IVF offers a unique way for both partners to participate in the same conception and pregnancy.
If the answer is no, there are other equally valid ways to build the family.