At a glance
A practical checklist for patients whose embryos are biopsied in Thailand but tested in another country, covering timing, transport conditions, documentation and lab-to-lab communication.
If your embryos are biopsied in Thailand but the genetic testing happens in another country, the biopsy samples must travel between laboratories. This is often called PGT-A sample shipping. The logistics matter because a sample that is delayed, mishandled or poorly documented may not give a usable result. You do not need to become a shipping expert, but you should know which questions to ask before biopsy day. This guide explains the main steps, the categories of information to confirm, and the practical checks that help you stay informed without relying on assumptions.
At a glance
- PGT-A looks at chromosome number in biopsied embryo cells; it does not guarantee a pregnancy or a healthy child.
- Cross-border sample shipping involves the IVF clinic, the testing laboratory and often a courier or logistics provider.
- Timing, temperature, packaging, documentation and communication are the main categories to confirm.
- Ask who is responsible at each step and how you will be told if something changes.
- Keep your questions in writing so you have a record of what was agreed.
What PGT-A is and why shipping is part of the plan
Preimplantation genetic testing for aneuploidy (PGT-A) is a laboratory test performed on a small number of cells removed from an embryo during IVF. The test estimates whether the embryo has the expected number of chromosomes. It is one type of preimplantation genetic testing; PGT-M looks at a specific inherited condition, and PGT-SR looks at chromosome rearrangements. Each has different purposes and limitations.
When the biopsy is performed in Thailand and the testing laboratory is in another country, the sample must be transported across borders. That adds logistics to the treatment plan. The goal is to keep the sample stable and identifiable from the moment it is collected until the laboratory reports a result. Your clinic and the testing laboratory should have a agreed process for this. Your role is to understand the process well enough to ask informed questions.
Who is involved in the shipping chain
Cross-border sample transport usually involves several parties. The exact arrangements vary, so confirm the details for your own case.
- IVF clinic in Thailand: performs the biopsy, prepares the sample and may coordinate the handover to a courier.
- Testing laboratory: receives the sample, processes it and issues the report.
- Courier or logistics provider: moves the sample between countries under specific conditions.
- You and your partner: provide consent, confirm identity details and may need to approve or acknowledge shipping arrangements.
Ask for a simple map of who does what. If no single person is clearly responsible for the handover, that is a gap worth clarifying before biopsy day.
Timing: when the sample is collected and when it travels
Biopsy timing is linked to embryo development in the laboratory. The sample is usually taken at a specific stage, and the shipping schedule should be planned around that stage. You do not need to memorise the biology, but you should ask how the clinic and the testing laboratory align their schedules.
Questions to ask about timing:
- On which day after fertilisation is the biopsy expected to take place?
- How soon after biopsy is the sample prepared for transport?
- Is there a planned shipping day, and what happens if that day changes?
- How long is the sample expected to be in transit?
- What is the backup plan if a flight is delayed or a courier misses a collection?
- Will the embryo be frozen while waiting for the result, and how does that affect the timeline?
Because transport schedules and laboratory cut-off times can change, treat any specific timing you are given as an estimate to confirm with the clinic and laboratory, not as a fixed promise.
Transport conditions: what to confirm
Biopsy samples are delicate. The testing laboratory usually specifies how the sample should be packaged and transported. The IVF clinic should follow those instructions. Ask both sides to confirm the same requirements.
Categories to confirm:
- Packaging: what type of container, vial or tube is used, and how it is sealed and labelled.
- Temperature: whether the sample travels at room temperature, refrigerated or frozen, and how that temperature is maintained.
- Documentation: what paperwork, labels or identifiers travel with the sample.
- Chain of custody: how the sample is tracked from clinic to laboratory, and who signs for it at each handover.
- Customs and import rules: what the courier or laboratory needs to clear the sample through the destination country.
- Insurance or contingency: what happens if the sample is delayed, damaged or lost.
You do not need to arrange these details yourself, but you should know who is responsible for each one. If the answer is unclear, ask for it in writing.
Communication between the two laboratories
Good communication reduces the risk of confusion. The IVF clinic and the testing laboratory should agree on how they will share information before, during and after shipping.
Ask about:
- Who is the main contact at each laboratory?
- How will they confirm that the sample has been collected and shipped?
- How will they confirm that the sample has arrived and been accepted for testing?
- What is the expected turnaround time for the result, and how is that communicated?
- Who will explain the result to you, and in what language?
- What happens if the laboratory needs more information or the sample cannot be tested?
If you are coordinating across languages and time zones, ask whether written summaries will be provided. Keep copies of all messages and documents.
Checklist: questions to ask before biopsy day
Use this checklist as a starting point. Add your own questions and record the answers.
| Topic | Questions to ask |
|---|---|
| Roles | Who performs the biopsy? Who prepares the sample? Who arranges shipping? Who receives it? |
| Timing | When is the biopsy expected? When does the sample ship? How long is transit? What is the backup plan? |
| Transport | What packaging and temperature are required? How is the sample tracked? What documents travel with it? |
| Customs | What import or export paperwork is needed? Who prepares it? What happens if clearance is delayed? |
| Communication | Who contacts whom? How will you be updated? Who explains the result? |
| Contingency | What if the sample is delayed, damaged or unusable? What are the options then? |
| Costs | Which shipping, courier, documentation and testing costs are included, and which are separate? |
What can go wrong, and how to stay informed
Cross-border shipping has several points where delays or problems can occur. Weather, flight schedules, customs checks and courier errors are outside your control. What you can control is how well you understand the plan and how quickly you are told if something changes.
Ask the clinic and laboratory to tell you:
- What events would trigger a call or email to you.
- Who will contact you if the sample is delayed.
- What options exist if the sample cannot be tested.
- Whether a repeat biopsy would be possible, and what that would involve.
Remember that PGT-A is a screening test, not a guarantee. It can provide useful information, but it cannot ensure a pregnancy, a live birth or a child without a genetic condition. Your clinic should explain the limitations and alternatives for your situation.
Costs and paperwork: what to confirm
Shipping a biopsy sample across borders usually involves several cost categories. These may include courier fees, packaging materials, documentation, customs clearance, laboratory handling and the genetic test itself. Some clinics bundle these; others list them separately. Because prices and rules vary, ask for a written breakdown of what is included and what is not.
Paperwork may include consent forms, sample identification documents, import or export permits, and courier waybills. The exact requirements depend on the countries involved and can change. Confirm with your clinic, the testing laboratory and the courier what is needed for your case. Do not rely on general advice from other patients, because rules differ by destination and by laboratory.
Next steps
- Ask your clinic for a written summary of the biopsy and shipping process.
- Confirm who is responsible at each step and how you will be contacted.
- Request a cost breakdown that separates shipping from testing.
- Ask the testing laboratory what it needs from the clinic and from you.
- Keep copies of all consent forms, labels and messages.
- Review the PGT in Thailand guide and the patient guides for more context.
- Check the FAQ for common questions about PGT and logistics.
If any answer is vague, ask again. A clear process is easier to follow and easier to trust.
Frequently asked questions
Can I arrange the shipping of my PGT-A sample myself?
In most cases, the IVF clinic and the testing laboratory coordinate shipping because the sample must be handled under specific conditions and with correct documentation. You may be asked to provide consent or identity documents, but the clinic and laboratory usually manage the courier and packaging. Ask your clinic who is responsible before biopsy day.
How long does it take for a biopsy sample to travel from Thailand to another country?
Transit time depends on the destination, flight schedules, customs clearance and the courier. It is not possible to give a single reliable figure. Ask your clinic and the testing laboratory for an estimate for your specific route, and ask what happens if the sample is delayed.
What happens if the sample is damaged or cannot be tested?
If a sample cannot be tested, the laboratory should inform your clinic. Your clinic should then explain the options, which may include discussing whether a repeat biopsy is possible. The exact options depend on your embryos and your treatment plan, so ask your clinic to explain what would happen in your case.
Does PGT-A guarantee a healthy baby?
No. PGT-A estimates chromosome number in the biopsied cells, but it cannot guarantee a pregnancy, a live birth or a child without a genetic condition. It is a screening test with limitations. Your clinic should discuss what PGT-A can and cannot tell you, and what alternatives exist.
What should I ask about communication between the two laboratories?
Ask who the main contact is at each laboratory, how they will confirm collection, shipping and arrival, how long the result is expected to take, and who will explain the result to you. If you speak a different language from the laboratory, ask whether written summaries will be provided.
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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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