At a glance
Planning IVF with PGT in Thailand? Learn how preimplantation genetic testing adds extra days for biopsy, transport, and analysis, and what to consider when booking travel and accommodation.
Understanding the IVF Timeline with PGT
When you add preimplantation genetic testing (PGT) to an IVF cycle, the overall timeline extends beyond a standard fresh embryo transfer. This is because embryos must be biopsied, the biopsy samples must be transported to a genetics laboratory, and the genetic analysis itself takes time. For international patients planning travel and accommodation in Thailand, understanding these extra steps helps you schedule your stay realistically.
Standard IVF Timeline Without PGT
A typical IVF cycle in Thailand involves ovarian stimulation (about 10–14 days), egg retrieval (1 day), fertilization and embryo culture (5–6 days to blastocyst stage), and then a fresh embryo transfer (usually day 5 or 6). The entire process from starting medication to transfer can take approximately 3–4 weeks. However, when PGT is performed, the transfer is postponed to a later frozen embryo transfer (FET) cycle.
How PGT Adds Time
1. Embryo Biopsy (Day 5 or 6)
On the same day as a standard blastocyst biopsy, a few cells are removed from each embryo. This procedure adds no extra days to the culture period—it is performed when embryos are ready. However, the biopsy itself requires specialized equipment and embryologist expertise, which is standard in Thai IVF clinics offering PGT.
2. Sample Transport to Genetics Lab
After biopsy, the cell samples must be sent to a genetics laboratory for analysis. Some clinics have an in-house lab, while others send samples to an external facility. Transport can take 1–2 days, depending on courier schedules and lab location. This is a logistical step that adds time before results are available.
3. Genetic Analysis Time
The genetic analysis itself takes several days. For PGT-A (aneuploidy screening), results typically require 5–7 days. For PGT-M (monogenic disorders) or PGT-SR (structural rearrangements), the analysis may take longer, often 7–14 days or more, because it involves customized probes or family studies. The exact turnaround time depends on the lab’s workload and the complexity of the test.
4. Embryo Vitrification and Storage
While waiting for results, all biopsied embryos are vitrified (frozen) and stored. This is a standard procedure and does not add extra time beyond the freezing step itself, which occurs on the day of biopsy.
5. Frozen Embryo Transfer (FET) Cycle
Once PGT results are received, you and your doctor will select a euploid (chromosomally normal) embryo for transfer. The transfer is performed in a subsequent frozen embryo transfer cycle, which requires preparing the uterine lining with medication over approximately 2–4 weeks. This FET cycle is separate from the initial stimulation and retrieval cycle.
Total Additional Time Estimate
From the day of egg retrieval to the day of frozen embryo transfer, the entire process with PGT typically takes longer than a fresh transfer cycle. The extra time includes:
- Biopsy: no extra days (performed on day 5/6)
- Transport: 1–2 days
- Genetic analysis: 5–14 days (depending on test type)
- FET cycle preparation: 2–4 weeks
In total, you can expect the PGT process to add approximately 3–6 weeks to the overall timeline compared to a fresh transfer. However, exact durations vary by clinic, lab, and individual patient factors. Always confirm with your treating clinic.
Planning Your Travel and Accommodation
For international patients, the timeline affects how long you need to stay in Thailand. Here are key considerations:
- First visit (stimulation and retrieval): Plan to stay for about 2–3 weeks for monitoring, egg retrieval, and embryo culture. You may be able to return home after the biopsy and vitrification, but check with your clinic about any required follow-up.
- Waiting period for results: You do not need to remain in Thailand while genetic analysis is performed. Results are typically communicated by email or phone. You can return home and come back for the FET cycle.
- Second visit (FET): Plan to stay for about 2–4 weeks for uterine preparation and embryo transfer. The exact duration depends on your medication protocol and clinic schedule.
- Accommodation: Consider booking flexible accommodation that allows you to extend or shorten your stay. Many clinics offer packages or can recommend nearby serviced apartments.
Factors That Can Affect the Timeline
- Clinic and lab schedules: Some labs run PGT batches only on certain days, which can add waiting time.
- Number of embryos: More embryos may require longer analysis time, but typically the turnaround is the same regardless of quantity.
- Type of PGT: PGT-M and PGT-SR often require more time than PGT-A due to test customization.
- Embryo development: If embryos reach blastocyst stage later (day 6 or 7), the biopsy is delayed accordingly.
- Your menstrual cycle: The FET cycle must be timed with your natural or medicated cycle, which can introduce variability.
Questions to Ask Your Clinic
To plan accurately, ask your chosen clinic these questions:
- What is the typical turnaround time for PGT results from your lab?
- Do you have an in-house genetics lab, or do you send samples externally? How does that affect timing?
- What is the recommended interval between the retrieval cycle and the FET cycle?
- Can I receive results remotely, or do I need to be in Thailand?
- What is the estimated total time from start to embryo transfer with PGT?
Summary
Adding PGT to an IVF cycle in Thailand extends the timeline primarily due to genetic analysis and the need for a separate frozen embryo transfer cycle. While the biopsy itself does not add days, the analysis and FET preparation can add several weeks. By understanding these steps and planning your travel accordingly, you can manage your expectations and schedule your stay in Thailand more effectively. Always confirm specific timelines with your clinic, as individual protocols and lab logistics vary.
Frequently asked questions
Does PGT add time to the IVF cycle?
Yes, PGT adds time because embryos must be biopsied, samples sent to a genetics lab, and results analyzed before a frozen embryo transfer can be scheduled. The total additional time is typically several weeks.
How long does PGT-A take in Thailand?
PGT-A results usually take about 5–7 days from the time the biopsy sample reaches the lab. However, exact turnaround times vary by clinic and lab, so confirm with your provider.
Can I go home while waiting for PGT results?
Yes, most patients return home after the egg retrieval and embryo biopsy. Results are communicated remotely, and you can return to Thailand for the frozen embryo transfer.
How long do I need to stay in Thailand for IVF with PGT?
You may need two separate stays: about 2–3 weeks for the stimulation and retrieval cycle, and another 2–4 weeks for the frozen embryo transfer cycle. The gap between stays depends on the analysis time and your clinic's schedule.
Does the type of PGT affect the timeline?
Yes. PGT-M and PGT-SR often require longer analysis time (up to 2 weeks or more) compared to PGT-A, because they involve customized testing.
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Medical information notice: This article is educational and does not replace individual assessment, diagnosis, genetic counselling or treatment advice from a licensed clinician. Provider services, availability, fees and policies should be verified directly before booking.
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