Single embryo transfer: questions to ask before treatment
Discuss one transfer in the context of the whole treatment plan and the person carrying.

Single embryo transfer means placing one embryo into the uterus during a transfer procedure. The purpose is to pursue pregnancy while reducing the chance of a multiple pregnancy. It is a clinical decision to discuss before transfer day, with attention to the embryos, the person carrying, and the full treatment plan.
If you are hoping for two children, say so during planning. That family goal is different from deciding to transfer two embryos in one attempt. It deserves a conversation about future options as well as the next procedure.
Ask why one embryo is recommended
ASRM's transfer guidance aims to promote singleton pregnancy while considering cumulative live-birth outcomes. It recommends transferring one embryo shown to be euploid, meaning it has the expected chromosome number, regardless of patient age. Other recommendations depend on the clinical circumstances.
Have the clinician explain the recommendation using your own information. Relevant questions include which embryo is being considered, what is known about it, what remains uncertain, and how the health of the person carrying affects the plan.
Do not read a table of maximum transfer numbers as a target to reach. Ask how a recommendation was reached and whether you have understood its purpose. The number of embryos transferred is not a measure of how seriously a team is taking your wish for a child.
You can request time to absorb that explanation before signing consent. A transfer-day conversation is a poor substitute for understanding the plan earlier.
Make the multiple-pregnancy discussion concrete
Twins are not simply two singleton pregnancies happening together. ACOG identifies preterm birth as the most common complication of multiple pregnancy. Discuss the implications for both the pregnant person and the babies rather than considering only the number of children hoped for.
Useful questions connect risk with care: Would specialist appointments be needed? How might delivery planning differ? What support would be necessary if the pregnancy or newborn care became complicated? The answers help you understand why embryo number matters.
A single embryo transfer cannot promise a live birth or eliminate every pregnancy risk. Ask your clinician to describe the remaining uncertainties without reducing the conversation to “safe” versus “unsafe.” Neither a reassuring anecdote about twins nor a frightening story can estimate your particular outcome.
If finances are driving the wish to transfer more embryos, name that pressure directly. It belongs in the discussion, alongside the medical considerations.
Compare the whole plan, including later transfers
Ask what the proposed path looks like if the first transfer does not lead to a birth. Are there other embryos available? What would need review before a later transfer? What could require another retrieval? A written outline makes the next decision easier to see.
| Question | Detail to request |
|---|---|
| What outcome are we comparing? | Live birth, pregnancy, and laboratory results are different measures. |
| What happens to other embryos? | The storage arrangement, consent choices, and future transfer process. |
| What does another transfer involve? | Clinical review, preparation, scheduling, and a separate estimate. |
| When do we reconsider? | The findings or events that would change the recommendation. |
Avoid comparing the cost of one single transfer with an undefined alternative that assumes everything succeeds. Use our guide to IVF success rates to check what the quoted numbers actually describe.
You can also ask the team to explain which parts of the plan are settled now and which depend on the results of this attempt.
Include the gestational carrier in the decision
For gestational-carrier cycles, ASRM strongly recommends single embryo transfer because of the risks associated with multiple gestation. The carrier is the person undergoing the procedure and pregnancy. Her informed participation cannot be replaced by intended parents agreeing among themselves.
Discuss expectations early enough that the clinical plan and legal conversations can address them. Identify who will explain the recommendation, how questions will be handled, and what happens if people disagree. Do not treat a contract discussion as a substitute for clinical consent.
Keep room for the carrier to speak privately with her own professionals. If a proposed change comes up, return to the relevant clinical and legal teams before treating it as agreed. Our surrogacy process guide places these discussions in the wider sequence.
Leave with a plan you can explain
At the end of the consultation, try describing the recommendation back in two or three sentences: which embryo is planned, why that number is recommended, and what happens next if the attempt does not succeed. Ask the clinician to correct anything missing.
Save the consent information and written estimate together. Note the contact for clinical questions separately from the contact for billing. If a question remains unanswered, write it down rather than assuming it will be resolved on the day.
You can use Cove's intended-parent path to explore introductions while keeping embryo-transfer decisions with the people receiving care and their clinical team.
Sources & further reading
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