DNA Testing in Thailand for Paternity

We can facilitate painless, bloodless DNA testing which can establish with 99% accuracy whether or not a particular man is the biological father of a particular child. We do not even need a sample from the mother. The results are about 99% accurate.

We have an established relationship with a laboratory in the USA for collecting DNA samples. We send your samples by FedEx to the lab, and they determine in 3 to 10 working days (depending on your payment) whether or not a particular man is the biological father of a particular child.

Actually, you can determine family relations over generations, but by far the most frequent request of us is from guys wanting to know if they are the father of a particular child.

If you wish to go thru Thai methods, there are only two places you can go, which have required a blood sample and official paperwork, and a government process, plus you must deal with the Thai language. If you wish to keep your DNA private and avoid bureaucratic requirements, then consider the private lab in the USA, perhaps at least for the first test to find out the results before you invest heavily into any legal requirements. (We have a legal option, too, but most people request the quick and easy method instead, at least at first, which avoids legal issues.)

The DNA samples we privately collect are simply wipes of the inside of the cheek to collect cheek cells lining the mucus membrane inside of the mouth.

We have sample collection kits here. They have something which looks like a cotton swab except the stick is longer and the swab on the end is actually a different material than cotton, slightly more abrasive.

We need more than one sample because the tests are conducted more than once to make sure we get the same DNA results. This is especially required if the first test excludes the man as the father.

The only tricky thing about this is to not contaminate the swabs by touching them or letting them touch anything which might get someone else's DNA onto the swab.

You can also take samples yourself with Q-Tips, but it is best to wear plastic or rubber gloves such as what food handlers and doctors use. All this is available at 7-11, altogether less than 100 baht. You just need to do the cotton swab wipes more diligently with cotton Q-Tips. Small babies sometimes like to chew on the tips, which is perfect, but we must get more than one tip, at least 2 and preferably about 5. Immediately afterwards, seal them from contaminants. As soon as you possibly can, unseal them to air them out, such as in front of a fan, because bacteria can destroy the skin cells, so it is best to make sure they are dried out, without touching the tips! But be careful to not contaminate the samples. This usually works with Q-Tips. For yourself, rinse out your mouth with plain water before taking a sample. Try to get baby samples not immediately after a meal, but it's usually OK anyway as long as the wipes are good and the tips dried well.

It's so easy, even a nanny can collect samples. You don't need to be a certified lab technician.

Notably, people have provided DNA samples including cigarette butts, clothing (not dirty parts of diapers), and other means, but this is not recommended.

If interested, please contact us.

"Paternity fraud" is when a mother tricks a man into believing he is the biological father of a child, when in fact it is another man, usually to receive financial support from the tricked man. (Actually, she may or may not be sure.)

The most common situations which we encounter for DNA testing, which are between former Thai prostitutes and a foreign man who had a sexual relationship without protection, the man is normally not the husband and the relationship has not continued as a loving couple, so that the alleged father may question whether he is the biological father.

A man who wants to be a good kind of person, or not wanting to be a bad kind of man, may consider taking partial responsibility for a new part of himself in the next generation, the result of an act which he is equally responsible for, or harbor some similar issue of morality or honor.

However, even though it is relatively very cheap to raise a child in Thailand, e.g., by related Thai social parents instead of the biological parents, the man may still be hesitant to get involved due to doubts whether he is truly the biological father. There may be various financial, emotional, and other issues involved in this longterm situation. If the man is not sure whether he is truly the father, then he is much more likely to reject or limit his support for that reason.

A DNA test can resolve any uncertainty about the biological father, so that the issue is settled in your minds, and a situation more fair to all is likely to be arranged, stable and without lingering doubts.

If the mother can find out who the father truly is, then the child will know who their father is, which is important for identity.

Of course, some people object to paternity testing, wanting every child to believe they are from any particular father, correct or not. A more common philosophy is that we should be fair to all parties involved, based on the truth. In those cases in which the alleged father is excluded, the mother can then turn to another father, or, if she still does not know who the biological father is, at least she can manage that situation more responsibly for the longterm.

We normally do DNA tests only as regards babies, not grown children, to find out before the baby becomes a child and bonds to a particular father.

To get the right person for the job, please send a message to our "inbox" (not "info") at

Alternatively, you can just use our contact form

Either way, we will usually respond within 1 to 24 hours.

We are sometimes available for live chat, if the icon below is flashing "Live chat now" instead of "Please leave a message".

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We are located at: Thailand PI Riviera 3 Tower 226/15 Bond Street Muang Thong Thani, Tiwanon Pakkred, Nonthaburi, Bangkok 11120 Thailand By appointment only, please. Sometimes, an agent can meet you at your location (depends on location). Tel: +66-2-960-0557 (a landline, not mobile) (if busy or no answer, then +66-2-960-0556) Fax: Attn. Khun Nannapat +66-2-960-0833 (mobile phone numbers given to customers)

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We are thaiLANDpi.com -- both a foreigner and Thais. Please see more info on our Mark, our expat private investigator. We have run this thailandpi.com website since 2002 (you can independently check WhoIs for any domain name creation date and owner), and have been doing private investigations in Thailand since 1997, albeit significantly expanded since 2000.