At a glance
Understand the typical turnaround time for preimplantation genetic testing (PGT) results from a Thai lab, including key steps and factors that may cause delays. Plan your IVF cycle and travel accordingly.
Understanding the PGT Process and Timeline
Preimplantation genetic testing (PGT) is performed on embryos created through IVF to screen for genetic abnormalities. The timeline from embryo biopsy to receiving results involves several steps, each with its own duration. While exact turnaround times vary by lab, a general understanding helps patients plan their cycle and travel.
At a Glance: Key Steps in PGT
- Embryo Biopsy: Cells are removed from the embryo on day 5 or 6 of development.
- Sample Preparation and Shipping: Biopsied cells are prepared and sent to the genetic testing laboratory.
- Genetic Analysis: The lab performs DNA amplification and analysis (e.g., next-generation sequencing).
- Result Reporting: Results are sent to the IVF clinic, which then communicates them to you.
Typical Timeline for PGT Results
The entire process from biopsy to results generally takes between 7 to 14 days. However, this can vary based on the lab’s workload, the type of PGT (PGT-A for aneuploidy, PGT-M for monogenic disorders, PGT-SR for structural rearrangements), and logistical factors. Below is a general breakdown:
| Step | Approximate Duration | Notes |
|---|---|---|
| Embryo biopsy | Day 5–6 of embryo development | Performed at the IVF clinic |
| Sample shipping to lab | 1–2 days | Domestic or international courier |
| DNA amplification and analysis | 5–10 days | Depends on lab protocol and test type |
| Result reporting to clinic | 1–2 days | Electronic report |
| Clinic communication to patient | 1–2 days | May include consultation |
Total: Approximately 7–14 days from biopsy to patient notification.
Factors That Can Affect the Timeline
Type of PGT
PGT-A (aneuploidy screening) is typically faster than PGT-M or PGT-SR, which require additional steps such as developing a customized probe or analyzing specific gene mutations.
Lab Workload and Scheduling
Genetic testing labs may have varying workloads. Some labs run batches on specific days, which can introduce delays. Confirm with your clinic whether the lab processes samples continuously or in batches.
Shipping and Logistics
If the lab is located outside Thailand, international shipping and customs clearance can add time. Even domestic shipping may be affected by courier schedules.
Sample Quality
Rarely, a biopsy sample may have insufficient cells or poor DNA quality, requiring a repeat biopsy or additional analysis, which extends the timeline.
Clinic Communication
Some clinics wait until all results are ready before notifying patients, while others provide results as they become available. Ask your clinic about their policy.
Planning Your IVF Cycle and Travel
Since PGT results are needed before a frozen embryo transfer (FET), the timeline affects your overall cycle planning. Typically, after egg retrieval and fertilization, embryos are cultured to day 5–6 for biopsy. The results arrive about 1–2 weeks later. If you are traveling to Thailand for treatment, consider the following:
- Duration of stay: You may need to stay for the initial IVF phase (egg retrieval, fertilization, biopsy) and then return for FET after results are available. Alternatively, some patients remain in Thailand during the waiting period.
- Embryo freezing: After biopsy, embryos are vitrified (frozen) and stored until results are ready. This is standard practice.
- FET scheduling: Once results are received, you can plan the FET cycle, which typically involves hormonal preparation over 2–4 weeks before transfer.
Discuss with your clinic the expected timeline and whether you can receive results remotely or need to be present for consultation.
Questions to Ask Your Clinic
- Which genetic testing lab do you work with, and where is it located?
- What is the typical turnaround time for PGT results from that lab?
- Do you batch samples, or are they processed individually?
- How will I receive the results (phone, email, portal)?
- Can I have a consultation to discuss results remotely?
- What happens if the sample is insufficient or results are delayed?
Next Steps
- Confirm the PGT timeline with your chosen IVF clinic in Thailand.
- Plan your travel and accommodation to accommodate the waiting period.
- Discuss embryo storage and shipping options if you plan to transfer embryos to another location.
- Ensure you have a clear understanding of costs associated with PGT and any potential additional charges for rush processing or repeat biopsies.
Frequently asked questions
How long does PGT-A take in Thailand?
PGT-A typically takes about 7–10 days from biopsy to results, but this can vary by lab. Confirm the exact timeline with your clinic.
Can I get PGT results faster if I pay extra?
Some labs offer expedited processing for an additional fee. Ask your clinic if this option is available and how much time it saves.
What happens if my embryo biopsy sample is insufficient?
If the sample has too few cells or poor DNA, the lab may request a repeat biopsy from the same embryo (if possible) or the result may be inconclusive. This can add several days to the timeline.
Do I need to stay in Thailand while waiting for PGT results?
Not necessarily. Many patients return home after the biopsy and receive results remotely. However, you will need to return for the frozen embryo transfer, which is typically scheduled after results are available.
How long after PGT results can I have the embryo transfer?
The transfer is usually scheduled during a subsequent menstrual cycle, after hormonal preparation of the uterine lining. This can take 2–4 weeks from the start of the cycle.
Continue your research
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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