Last year I helped a friend compare Chengdu IVF clinics with overseas options, and realized most people think the process is just “stimulation-retrieval-transfer.” Walk through it once and you’ll see that pre-cycle registration and testing alone take at least 15 days. What you do during this window—and what documents you prepare—directly determines whether you can start on schedule.
Registration Documents: More Than You Think
Whether you’re doing IVF in Chengdu or surrogacy in Malaysia, you’ll need both partners’ IDs, marriage certificate, and recent test results: hormone panel (within 3 months), AMH, and semen analysis. I’ve seen people get sent back because their AMH report expired—wasted a full week getting new bloodwork. Malaysia clinics are stricter about document dates than domestic ones. Colombia programs sometimes accept slightly older reports, but don’t count on it. If your AMH is below 1, ask upfront whether they want a retest before you fly out. One couple I know had to extend their hotel stay in Kuala Lumpur by 10 days because the clinic flagged an outdated TSH result at check-in.
Stimulation to Retrieval: Usually 10-14 Days
Third-generation IVF stimulation protocols depend on ovarian reserve. If your AMH is under 1, expect a mild stimulation protocol—lower daily doses but the cycle might stretch to 16 days instead of the standard 12. I’ve noticed Chengdu clinics tend to use antagonist protocols more aggressively, while Malaysian doctors lean conservative with agonist downregulation if you’re over 38. Monitoring happens every 2-3 days: bloodwork plus ultrasound to check follicle size. The retrieval itself is scheduled when at least 3 follicles hit 18mm. Don’t book your return flight until trigger day is confirmed—I’ve seen schedules shift by 3 days because follicles grew slower than expected.
Blastocyst Culture & PGT Screening: 7-15 Day Wait
After retrieval, embryos culture to day 5 or day 6 blastocyst stage before PGT testing. The biopsy samples get sent to a genetics lab—this is where timelines vary wildly. Chengdu labs usually return results in 7-10 days. Malaysia often uses Thai or Singaporean labs, so add 12-15 days. Colombia’s timeline sits in between at around 10 days. If you’re doing fresh transfer, you’re looking at at least 3 weeks from retrieval to transfer day (culture + screening + endometrial prep). Frozen transfer gives you more control but adds another 1-2 months for a separate FET cycle. One thing nobody mentions: if all embryos come back abnormal, you’re restarting from square one—another 6-8 weeks minimum.
Choosing a licensed facility and understanding real wait times at each stage is how you avoid detours. Budget an extra 2 weeks beyond the “typical timeline” you see online, because typical rarely accounts for slight protocol adjustments or lab backlogs. The clinics that give you day-by-day schedules upfront—not just vague ranges—are usually the ones with better coordination between departments.