The short answer
A single IVF cycle is measured in weeks; an overseas cycle is measured in trips. Patients travelling for treatment usually spend either two shorter blocks in the country — one for stimulation and egg collection, one for the transfer — or one continuous stay of four to seven weeks. What is realistic depends on your protocol, your clinic and your leave.
What follows is a planning timeline, not a treatment plan: timings are typical ranges, and your clinic's instructions take precedence. Nothing here is medical advice.
Two ways to organise the trip
The two-trip model
The first trip covers ovarian stimulation, monitoring and egg collection, and usually lasts 12 to 18 days on the ground, including travel. Embryos are then frozen rather than transferred — a freeze-all approach — and you fly home. The second trip, typically one to three months later, covers a frozen embryo transfer (FET) cycle: about 7 to 10 days in the country, with the transfer around day 17 to 21 of your cycle. The model suits people with limited leave and separates the demanding part of treatment from the transfer, at the cost of extra laboratory work. The pregnancy test happens at home.
The single long stay
One continuous stay of four to six weeks can cover stimulation, egg collection, embryo culture and a fresh transfer, then the wait for the pregnancy test. If the plan changes to a freeze-all or FET, the stay can reach six to eight weeks.
Plan the trip around the protocol, not the protocol around the flight.
Stage by stage: where you actually need to be
The table maps a typical stimulated cycle with a fresh transfer.
| Stage | Typical duration | Must you be in the country? |
|---|---|---|
| Pre-cycle assessment and consent | 1–3 days, or before travel | Often remote; some clinics require one visit |
| Baseline scan and bloods (cycle day 2–3) | 1 day | Yes, at most clinics |
| Ovarian stimulation injections | 8–12 days | Yes for most of it; local monitoring sometimes accepted |
| Trigger injection | 1 day, timed to the hour | Yes — retrieval is 34–36 hours later |
| Egg collection | 1 day, a short sedated procedure | Yes |
| Fertilisation and culture to blastocyst | 5–6 days | No, though many stay nearby until transfer is decided |
| Fresh embryo transfer, or freeze-all | 1 day | Yes for a transfer; no if all embryos are frozen |
| Preimplantation genetic testing, if used | 1–3 weeks for results | No — embryos stay at the clinic |
| Frozen embryo transfer cycle | 7–10 days in the country; transfer around day 17–21 | Partly; local monitoring if agreed in advance |
| Pregnancy test after transfer | 9–14 days after transfer | No — normally done at home |
What can extend a cycle
Plans change: a delayed cycle is usually a clinical decision, not a failure of organisation.
- Poor or unexpected response. Too few follicles develop, or hormone levels behave unexpectedly, so the cycle is cancelled and restarted with a different protocol — adding a month or more.
- Ovarian hyperstimulation syndrome (OHSS) risk. Where the response is very strong, a fresh transfer may be unsafe, so all embryos are frozen and the transfer postponed.
- A freeze-all decision for other reasons. A thin lining, a high progesterone level or a scheduling problem can also lead to freezing rather than a fresh transfer, usually meaning a second trip.
- Genetic testing turnaround. Preimplantation genetic testing adds one to three weeks for results, and can show that no embryo is suitable for transfer.
- Something treated first. A polyp, a hydrosalpinx or a thyroid problem may need treatment before transfer, which takes time.
Legal and paperwork requirements in mainland China
Mainland China regulates assisted reproduction nationally, and licensed clinics apply the rules directly. The framework is written around married couples, and clinics generally require a marriage certificate for both partners before a cycle starts. Single people and same-sex couples are therefore generally unable to access IVF at mainland clinics, unlike the United Kingdom, Spain, Denmark, Belgium, Canada and parts of the United States, where clinics may treat them — though policies differ.
Two cautions. Access rules have been evolving: some provinces have widened certain fertility services, and clinics interpret the framework differently, so confirm the current position in writing. And if you married outside mainland China, the certificate may need certified translation and legalisation, or an apostille: China joined the Hague Apostille Convention with effect from 7 November 2023, changing the route for many documents. Verify what your clinic and the embassy or visa centre require.
Expect to sign consent forms, sometimes separately for egg collection, embryo freezing and storage, and to bring translated records of previous cycles. Preimplantation genetic testing is regulated and generally restricted to specified medical indications; non-medical sex selection is not permitted. Ask specifically about any test you are counting on.
Realistic leave from work
For the two-trip model, budget two to three weeks for the first trip and one to one and a half weeks for the second: about three to four weeks of leave in total, split into two blocks. A single long stay needs four to seven weeks continuously.
Two practical notes. Some clinics accept part of the stimulation monitoring being done locally, which shortens the first trip, but this must be agreed in writing before the cycle starts. And do not book a return flight for the day after a planned procedure: trigger dates move.
The two-week wait, and where to take the test
After a transfer comes the interval patients find hardest: waiting for a result that cannot be hurried. A blood test for hCG is usually taken 9 to 14 days after transfer. It is more sensitive than a urine test and gives a number that can be repeated to show a trend; a urine test at home is normally done around 14 days after transfer. Testing earlier is the commonest mistake: after an hCG trigger injection, residual hormone can produce a positive result that means nothing.
The test does not require you to be abroad: it can be taken at an accredited laboratory at home, with the result sent to the clinic that treated you. Follow the clinic's instructions on luteal support medication rather than adjusting it yourself, and expect an early ultrasound one to two weeks after a positive result.
What success rates do and do not tell you
Live birth rates after IVF depend heavily on age and on the reason for treatment, along with ovarian reserve, sperm factors, uterine factors and previous cycles. National registers such as those published by the HFEA and the CDC report outcomes by age band, and differences between bands are larger than most differences between clinics.
Clinic-reported figures are harder to compare than they look, because the denominator changes: per cycle started, per egg collection, per transfer or per patient, and clinics accepting more difficult cases can appear weaker on paper. No clinic can promise a baby, and any service that does is not being straight with you. Regulations and costs change, so verify the details above in writing and discuss your own prospects with a doctor who knows your history. This article is general information, not medical advice.
References
- World Health Organization — Infertility fact sheet
- NHS (UK) — IVF: what happens, success rates and risks
- Human Fertilisation and Embryology Authority (UK) — In vitro fertilisation (IVF)
- US Centers for Disease Control and Prevention — How to Interpret ART Success Rates
- European Society of Human Reproduction and Embryology — guidelines and patient information
- National Health Commission of the People's Republic of China — English portal: health regulation and statistics
- National Healthcare Security Administration of the People's Republic of China — medical insurance and fertility treatment notices (Chinese)
- Hague Conference on Private International Law — Apostille Convention status table (China, in force 7 November 2023)