How to Choose a PGT Laboratory in Thailand: A Guide for International Patients

Choosing a PGT laboratory in Thailand is not the same as choosing a clinic. Many Thai IVF clinics work with one or more genetics laboratories, and the lab performs the actual embryo biopsy analysis and reporting. For international patients, the practical question is: which lab will handle your embryos, and how does that lab’s scope, communication, and logistics fit your situation? This guide gives you a structured way to compare labs and ask better questions. It does not recommend a specific lab, because the right fit depends on your clinical needs, your clinic’s workflow, and what you can verify directly.

At a glance

• PGT-A, PGT-M, and PGT-SR are different tests with different lab requirements.
• Accreditation and quality systems matter, but they are only one part of lab selection.
• Ask how results are reported, who explains them, and what happens if results are inconclusive.
• Confirm sample transport, timelines, and costs in writing before treatment.
• Your clinic’s lab relationships may limit your choice; ask early.

Why lab selection deserves its own conversation

In IVF with preimplantation genetic testing (PGT), a few cells are removed from an embryo and sent to a genetics laboratory for analysis. The lab’s job is to produce a reliable result that your clinic can use when deciding which embryo(s) to transfer. Because the lab step sits between the clinic and your transfer decision, a mismatch in expectations, scope, or turnaround time can affect your planning even when the clinical care is good.

International patients often compare clinics first and labs second. That order can work, but it helps to ask about the lab early, because some clinics work with a preferred lab while others may offer a choice. The lab you end up with can influence how your samples are handled, how results are worded, and how quickly you can move to the next step.

Start with the test you actually need

PGT is an umbrella term. The lab requirements differ by test type, so clarify which test is being considered for your case before comparing labs.

• PGT-A (aneuploidy screening): Looks at chromosome number in embryos. It is used to identify embryos with extra or missing chromosomes. It does not diagnose a specific inherited condition and does not guarantee a healthy pregnancy.
• PGT-M (monogenic disease): Looks for a specific inherited condition caused by a single gene change. It usually requires a known familial mutation and often a custom test setup, which can take additional time.
• PGT-SR (structural rearrangement): Used when a parent has a known chromosome rearrangement, such as a translocation or inversion. It requires lab expertise in structural chromosome analysis.

Not every lab offers every test, and not every clinic offers every lab option. If your case involves PGT-M or PGT-SR, ask whether the lab has relevant experience and whether a custom probe or test validation is needed. If your case involves PGT-A only, the comparison may focus more on reporting, logistics, and quality systems.

Core criteria for comparing PGT laboratories

Use the same criteria for each lab so your comparison is consistent. The table below lists decision areas and what to ask. It does not include specific lab names or figures, because those must be verified directly with the clinic or lab.

Decision area	What to ask	Why it matters
Accreditation and quality systems	Which accreditations does the lab hold? How does it participate in external quality assessment?	Indicates a structured approach to quality, but does not by itself guarantee outcomes.
Test scope	Does the lab offer PGT-A, PGT-M, and PGT-SR? Does it handle custom tests?	Your test type must match the lab’s capabilities.
Sample logistics	How are biopsy samples transported? Who is responsible at each step?	Transport errors or delays can affect sample integrity and timelines.
Turnaround time	What is the typical reporting time? Does it differ by test type?	Affects whether you can do a fresh or frozen transfer and how you plan travel.
Reporting and communication	What does the report include? Who explains it to you? Is a genetic counselor involved?	Clear reporting helps you understand results and limitations.
Inconclusive or failed results	What happens if a sample fails or results are inconclusive? Is re-testing possible?	Sets expectations and may affect decision-making.
Cost transparency	What is included in the lab fee? Are there separate charges for custom tests or re-runs?	Helps you compare total costs, not just headline prices.
Data and privacy	How are genetic data stored and shared? What consent is required?	Genetic information is sensitive and may have legal implications.

Accreditation and quality: what to verify

Accreditation is a useful starting point, but it is not a complete picture. Ask which specific accreditations the lab holds and whether they are current. You can also ask whether the lab participates in proficiency testing or external quality assessment schemes for the tests you need. If a clinic says it works with an accredited lab, ask for the lab’s name and how you can verify its status directly.

Quality systems also include internal controls, validation of new tests, and how the lab handles discrepancies. You do not need to become a lab expert, but you can ask how the lab monitors accuracy and what happens when a result is unclear.

Logistics for international patients

For international patients, lab selection is also a logistics decision. Embryo biopsy usually happens at the clinic, and the sample then goes to the lab. If the lab is off-site or in another city, transport arrangements matter. Ask who coordinates transport, how samples are tracked, and what contingency plans exist for delays.

Turnaround time affects your travel. If results take longer than expected, you may need to stay longer, change flights, or plan for a frozen embryo transfer instead of a fresh one. Ask for a realistic range, not a best-case number, and ask how you will be notified of delays.

If you are planning to return home between retrieval and transfer, clarify how results will be communicated internationally and whether your local doctor can receive them. Cross-border communication can add steps, so confirm who your main contact will be.

Reporting, counseling, and informed consent

A PGT report is a technical document. It should be explained in plain language by someone who understands both the lab result and your clinical context. Ask whether the clinic provides genetic counseling before and after testing. Counseling helps you understand what a result does and does not mean, including the possibility of mosaicism, inconclusive results, or variants of uncertain significance.

Informed consent for PGT should cover what is tested, what is not tested, the limitations of the test, and what happens to your samples and data. If you are comparing labs, ask to see a sample report (with identifiers removed) so you can judge how clearly results are presented.

Cost categories to compare

Lab fees vary, and the cheapest option is not automatically the best fit. Compare cost categories rather than a single number. Typical categories include:

• Test setup or custom probe development (for PGT-M or PGT-SR)
• Per-embryo or per-sample analysis fee
• Biopsy-related charges (often billed by the clinic, not the lab)
• Shipping and handling for samples
• Re-analysis or re-run fees if a sample fails
• Genetic counseling or consultation fees

Ask for a written breakdown and clarify which costs are paid to the clinic and which to the lab. Currency, payment timing, and refund policies are also worth confirming in writing.

Questions to ask your clinic about lab choice

1. Which laboratory or laboratories do you work with for PGT-A, PGT-M, and PGT-SR?
2. Can I choose a different lab, or is the lab determined by the clinic?
3. What accreditations does the lab hold, and how can I verify them?
4. What is the typical turnaround time for my test type, and what is the realistic range?
5. How are samples transported, and who is responsible if there is a delay?
6. What does the report include, and who will explain it to me?
7. What happens if a sample fails or the result is inconclusive?
8. What are the total lab-related costs, including any custom test or re-run fees?
9. How is my genetic data stored, shared, and protected?
10. Can my local doctor receive the results, and in what format?

Limitations and alternatives to keep in mind

PGT is a screening or diagnostic tool with limitations. It does not guarantee a successful pregnancy, a live birth, or a child without health conditions. Some embryos may be mosaic, meaning the result is not a simple positive or negative. In some cases, testing may not be appropriate, and your clinic may recommend proceeding without PGT or using a different approach.

If you are comparing labs, remember that lab quality is one factor among many. Your age, embryo quality, clinic expertise, and transfer planning also matter. A lab cannot compensate for all clinical variables, and no lab can promise an outcome.

Next steps for your lab comparison

1. Clarify which PGT test is being considered for your case.
2. Ask your clinic which labs it works with and whether you have a choice.
3. Request the lab’s name and verify its accreditation status directly.
4. Ask for a sample report and a written cost breakdown.
5. Confirm logistics, turnaround time, and communication plans in writing.
6. Discuss limitations and alternatives with a qualified professional before deciding.

You can also review our PGT in Thailand overview, compare hospitals, explore guides, and check the FAQ for more context. Always confirm details with your treating clinic and the relevant laboratory before making decisions.

Frequently asked questions

Can I choose which PGT laboratory my embryos are sent to in Thailand?

Sometimes, but not always. Some clinics work with a preferred laboratory, while others may offer a choice. Ask your clinic early whether you can select a lab and what the process would involve. If you cannot choose, ask which lab will be used and how to verify its credentials.

What is the difference between PGT-A, PGT-M, and PGT-SR when comparing labs?

PGT-A screens for chromosome number, PGT-M looks for a specific inherited condition, and PGT-SR looks for a known structural chromosome rearrangement. Labs may differ in which tests they offer and their experience with each. Match the lab's scope to the test your clinic recommends for your situation.

How long do PGT results take in Thailand?

Turnaround times vary by laboratory, test type, and whether a custom test is needed. Ask your clinic for a realistic range rather than a single number, and confirm how delays are communicated. This helps you plan travel and decide between a fresh or frozen embryo transfer.

Does a good PGT lab guarantee a successful pregnancy?

No. PGT is a tool that provides information about embryos, but it does not guarantee pregnancy, live birth, or a child without health conditions. Many factors affect outcomes, including embryo quality, maternal age, and clinical care. Discuss what PGT can and cannot do with your treating clinician.

What should I ask about genetic data privacy when choosing a lab?

Ask how your genetic data and samples are stored, who can access them, how long they are kept, and whether they are shared with third parties. Confirm what consent is required and how you can request deletion or withdrawal where applicable. Privacy rules may vary, so ask for the lab's policy in writing.

Continue your research

• Thailand hospital directory
• PGT in Thailand overview
• PGT and IVF guides

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.