There are many reasons why you might need to establish a DNA relationship between different people - alive, deceased, or simply not available for testing - who may or may not be related. These reasons range from wanting to have peace-of-mind to legal cases, such as custody challenges or inheritance claims.

We can help you put the pieces together.

Please email us at thailand@ptclabs.com and let us know your specific case. We're happy to give no-obligation advice.


UseLegal or Peace-of-Mind
Processing Timeapprox. 2-3 weeks
AccuracyVaried based on who is available for testing and what relationship you are trying to establish
DetailsA Y-Chromosome Test is used to identify your direct paternal lineage. The test analyzes your family tree, tracing backwards from a male Child to their Father, then to their Father's Father, and so on, to find out who shares the same Y-Chromosome DNA. It can be used in genealogical testing to determine a common male line in the family, as the genetic information in this chromosome is passed down from a Father to their male Children only. Before purchasing this test, it is important to contact us first, to discuss your requirements and whether this is the right test for you.  
PriceTHB 12,300 per sample (for Legal Tests, an additional Chain-of-Custody (CoC) Fee is paid directly to your sample collector)


In order for a DNA test to be used for legal purposes, certain processes and requirements must be met.
  1. The DNA samples must be collected by a certified, independent third party.
    • This sample collector must also be able to testify in court that they collected samples correctly.
  2. The DNA samples must follow a strict Chain of Custody procedure, from the point of sample collection, all the way to testing at our laboratory.
    • It is also important that the people being tested are never left alone with their samples.
  3. The people being tested have had their identities verified.
    • To prevent someone providing samples on behalf of someone else, we must verify the people being tested are who they say they are.
    • This calls for additional paperwork, ID, photographs, thumbprints, contact details, and more.
  • Nothing. The actual testing / analysis of DNA for a Legal (Chain-of-Custody) Test and a Peace-of-Mind (PoM) Test is identical. Both undergo the same rigorous testing, both are guaranteed at a minimum of 99.99%, and both are issued with notarized result reports.
  • The difference is that Legal DNA Tests have had DNA samples collected by a certified independent third party and have followed chain-of-custody. Furthermore, the people being tested must have their identity verified and documented.
  • However, in a PoM Test, you can collect your own samples and send them to us for testing. Therefore, a PoM Test cannot be used for immigration, custody or any other legal purposes because the above three criteria have not been met.
When you go to your sample collection appointment, be sure to bring:
  • Photo ID
  • Birth Certificate for children
At your appointment, we will:
  • Take copies of your Photo ID / Birth Certificate.
  • Get thumbprints (or for babies we sometimes get footprints) of all people being tested.
  • Take a 'mug shot' of all people being tested.
  • Fill out consent forms and other paperwork.
If you want to use your results in Thailand, the answer is “yes”. But you can make this decision once you know the result of your test. 
  • We are one of the very few foreign laboratories that can issue results that are accepted in Thailand, as well as abroad.
  • If you were to take paternity test with the Thai Police Hospital, your results do not need to be authenticated. However, it usually a minimum of four months to get your results with the Thai Police Hospital, and your results won’t be accepted outside of Thailand. There are currently no AABB-accredited DNA laboratories based in Thailand.


Legal Sample Collection

If you think there is a chance that you will want to use your results for any legal purpose at any time in the future, you need to follow legal requirements in the sample collection process.

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Unusual Samples

Oral swabs, or samples provided on cotton tips, are considered ‘standard samples’. All other samples are considered ‘unusual samples’ and must undergo DNA extraction before DNA testing can begin.

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Authentication of Results

If you plan to use the results of your DNA test for any legal purposes within Thailand, you will need to have a Legal Test and then have the results Authenticated.

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Visit Service

If you can’t make it to a collection center, or need a paternity test with newborn babies, we can often organize to come to your home/hotel or hospital.

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Result Delivery

Your result report will be emailed as soon as results are ready. Hard-copy results arrive via USPS up to 2 weeks later (included in your test fee). Express courier of reports incur the courier fee, and arrive in 2-3 days.

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