DNA Testing and the Question of Cost

Last revised: June 4, 2025

A thorough explanation of DNA testing cost ranges. Private testing runs in the 20,000-30,000 yen range, and legal testing is possible from around 80,000 yen. We cover the fee differences by testing purpose and sample type, as well as how to choose a trustworthy testing organization.

How much does DNA testing cost? A thorough look at price ranges and fee structures

Have you ever found yourself facing a deeply troubling situation in life—confirming a blood relationship with a parent or child, or suspecting infidelity on the part of a spouse or partner—and thought of "DNA testing" as an option?

DNA is unique genetic information that belongs only to that individual and never changes throughout their life. Because of this characteristic, DNA testing is widely used around the world as the most reliable scientific testing method available, from determining parent-child relationships to criminal investigations and identifying victims of disasters [ref:1].

However, when the average person considers DNA testing, the first thing they wonder is probably "how much will it cost?"

Hearing the words "DNA testing" conjures an image of advanced scientific analysis, and most people feel uneasy in the following ways.

• "Isn't it expensive?"
• "I'm not sure what the going rate is, so I'm anxious..."
• "Isn't this something only the police can do, and difficult for ordinary people to access?"

To ease these concerns, this article explains in detail the little-known topic of DNA testing costs—covering the types of testing, the fee structure by sample type, and how to choose a trustworthy testing organization.

The latest DNA testing can be done for 20,000-30,000 yen!

Looking back at the history of DNA testing, since British geneticist Dr. Alec Jeffreys announced DNA fingerprinting in 1985, the standard for paternity testing has shifted dramatically from conventional blood-type testing to DNA testing [ref:1].

In the late 1990s, DNA testing also came to be adopted in Japanese courts as a formal method for confirming blood relationships. However, DNA testing at that time was extremely expensive, with typical costs in the range of 200,000-300,000 yen. Because it required advanced technology and specialized equipment, and testing took a long time, it was not something ordinary people could use casually [ref:2].

Roughly 30 years have passed since then, and DNA analysis technologies such as PCR (polymerase chain reaction) have advanced dramatically. Thanks to automated testing and higher-performance capillary electrophoresis equipment, analysis that once took several weeks can now be completed in a matter of days, and costs have dropped significantly as a result [ref:3]. Thanks to these technological advances, private paternity DNA testing for personal confirmation purposes now typically costs in the range of 20,000-30,000 yen*.

*Note that DNA testing covers a variety of cases, and costs vary depending on the testing purpose and sample type.

The key factors are "testing purpose" and "sample type"

The two most important things to understand when it comes to DNA testing costs are "testing purpose" and "sample type." Because fees vary significantly based on these two factors, it's important to first clarify what purpose you have in mind for the DNA test.

The testing purposes and available samples are as follows.

What is private testing

This is DNA testing intended for personally checking a parent-child blood relationship. Rather than being used for legal proceedings such as court cases, it is used when you or your family want to confirm the truth of a blood relationship among yourselves. Because you receive a test kit by mail and collect the sample yourself, you can proceed with the testing conveniently and while protecting your privacy.

seeDNA's "private" parent-child DNA test can determine a parent-child blood relationship for 24,800 yen (tax included). In addition, round-trip shipping for the test kit is free, and all testing is performed at our own in-house lab in Japan. Since nothing is outsourced to an overseas lab, you can also feel secure about how your personal information is managed.

The sample is basically mucosal tissue (oral epithelium) collected by rubbing the inside of the mouth with a designated cotton swab. A major advantage of oral epithelium is that it is painless to collect and can be easily gathered from anyone, from infants to the elderly.

If collecting oral epithelium is difficult, samples other than the swab—such as a toothbrush, cigarette butt, hair (with root), or umbilical cord* can also be used.

*If you use a sample other than the designated swab, an additional fee of 33,000 yen (tax included) applies. This is because the designated swab can be tested using automated machinery, whereas samples other than the swab require manual DNA extraction by a lab technician.

What is legal testing

This is DNA testing intended for use in court cases or mediation. In legal testing, a third party must certify that "the sample was undoubtedly collected from the test subject in question," so sample collection and document preparation are all carried out in the presence of specialized staff. This witnessing procedure is called "identity verification (chain of custody)," and it is an essential element for issuing a test report with legal evidentiary standing [ref:4].

seeDNA's "legal" parent-child DNA test, which can be used as reliable documentation for court cases and mediation, is available from 88,000 yen (tax included). Witnessing fees at more than 200 affiliated legal offices nationwide are free of charge, making it easy to use no matter where you live.

The sample used is mucosal tissue (oral epithelium) collected by rubbing the inside of the mouth with a designated swab, in the presence of a witness. Because identity verification is mandatory for legal testing, the sample type is limited to oral epithelium.

Comparing private and legal testing

The process for requesting DNA testing

1. Inquiry and application: Apply by phone or online, selecting the type of test.
2. Receiving the test kit: For private testing, the test kit is mailed to your home. For legal testing, you make a reservation for the witnessing location.
3. Sample collection and return shipping: Collect and return the designated swab or other sample (for legal testing, collection takes place in the presence of a witness).
4. DNA analysis at the lab: At our in-house lab in Japan, DNA profiles are compared and analyzed using the STR (Short Tandem Repeat) method [ref:3].
5. Notification of results: Results are provided in as little as 3 business days after the sample arrives.

Find out the parent-child blood relationship
See details on "Parent-Child DNA Testing"

That covers the explanation of costs for paternity DNA testing between father and child. We hope you now understand that DNA testing is available at a more affordable cost than you might have imagined.

Find out who the baby's father is during pregnancy
See details on "Prenatal Parent-Child DNA Testing"

Find the DNA test you need from over 40 types of testing
Find the DNA test that's right for you

Cost matters. But the most important thing is "reliability"

We've now gone over the cost side of DNA testing in detail, and cost is certainly an important criterion for making a decision. However, what matters most in DNA testing is "the reliability of the testing."

DNA test results are directly tied not only to confirming a parent-child relationship, but in some cases to major life decisions or court proceedings. If you happen to request testing from an organization with low testing accuracy, you risk making an irreversible decision based on an incorrect result. That's why, while also weighing cost, the key point becomes how well you can identify a trustworthy testing provider.

Points for choosing a trustworthy DNA testing organization

When choosing a testing organization, we recommend checking the following points.

• Has it obtained international quality certification (ISO)? This serves as an indicator of whether the quality management of the testing process meets international standards.
• Does it have proper personal information protection in place? DNA information is the ultimate form of personal data, so third-party certifications such as the Privacy Mark provide peace of mind.
• Is testing performed at an in-house domestic lab? If samples are outsourced overseas, there is a higher risk of degradation during transport and of personal information leaks.
• Is the testing accuracy (probability of paternity) clearly stated? International standards call for a probability of paternity of 99.9% or higher, but organizations that guarantee even higher accuracy are preferable.
• Does it have a track record and expertise? It's important to choose an organization that specializes in DNA testing and has substantial experience.

seeDNA has obtained the international quality standard ISO9001 and the Privacy Mark for personal information protection. For parent-child DNA testing, we guarantee a probability of paternity of 99.99%, ten times stricter than the international standard, and we are a trusted DNA testing specialist organization that has never had a single misjudgment in parent-child DNA testing [ref:5].

If you are troubled by uncertainty over a parent-child blood relationship or a partner's infidelity, please feel free to contact seeDNA's DNA testing specialist staff.

[Free consultation with specialist staff]
[Toll-free number]
　0120-919-097
[Business hours]
　Mon-Sun 9:00-18:00 (excluding public holidays)

Frequently Asked Questions

Q1. How much does DNA testing cost?

A. For private testing intended for personal confirmation, seeDNA offers testing starting at 24,800 yen (tax included). For legal testing used in court cases or mediation, pricing starts at 88,000 yen (tax included). In the 1990s the going rate was 200,000-300,000 yen, but technological progress has driven prices down significantly.

Q2. What is the difference between private testing and legal testing?

A. Private testing is intended for personally confirming a blood relationship, with samples collected at home and mailed in. Legal testing is testing that can be used as evidence in court cases or mediation, with sample collection and identity verification carried out in the presence of specialized staff, and a test report with legal evidentiary standing is issued.

Q3. Can DNA testing be done with samples other than a swab?

A. Yes, DNA testing is possible using samples other than the designated swab, such as a toothbrush, cigarette butt, hair (with root), or umbilical cord. However, samples other than the swab require manual DNA extraction by a lab technician, so an additional fee of 33,000 yen (tax included) applies.

Q4. How long does it take to receive DNA test results?

A. At seeDNA, we provide test results in as little as 3 business days after the sample arrives at the lab. However, for special samples other than a swab, DNA extraction takes longer, so it may take more time than usual.

Q5. How accurate is DNA testing?

A. seeDNA's parent-child DNA testing guarantees a probability of paternity of 99.99%, ten times stricter than the international standard. Testing is performed at our own in-house domestic lab, which holds the ISO9001 international quality certification, and there has never been a single misjudgment to date.

Q6. Will anyone else find out that I've requested DNA testing?

A. seeDNA holds the Privacy Mark for personal information protection and thoroughly protects our customers' privacy. Test kits are also shipped in packaging designed so that no one can tell from the outside that it's a DNA test, so please rest assured.

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