DNA鑑定|一生の悩みを2日で解決|国内自社ラボDNA鑑定
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Do you have these concerns?
Concern 1Concern 2Concern 3Concern 4

Solve your concerns with a prenatal DNA test
featuring 10 times the international standard accuracy.

\ From 6 weeks of pregnancy, results in as little as 3 days /
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Confirm the biological father of your unborn child

A paternity test performed using the mother's blood during pregnancy:
This is a DNA test that reveals the true biological father of the unborn baby by comparing the fetal DNA in the pregnant woman's blood with the potential father's DNA.

You can easily take the test at over 300 partner hospitals nationwide. We also offer hospital booking assistance.

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Testing with Hair or
Cigarette Butts is OK

Basically, we ask you to submit buccal epithelium (inside of the cheek) as a sample, but testing is also possible with toothbrushes, hair, cigarette butts, etc.*
The accuracy of the test does not change depending on the sample type. The required amount of DNA is only a billionth of a gram. We reliably determine results even from trace samples using advanced analysis technology.

*Consent of the person being tested is required.

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seeDNAロゴアイコンTest Items

Discover genetic tendencies for health risks and traits/talents for both parent and child, spanning87itemsrelated to cancer, lifestyle diseases, and abilities.

* Depending on the condition of the DNA, some test item results may not be available if they do not meet our quality standards. Please be aware of this in advance.

  • Susceptibility to depression
  • Mathematical ability
  • Memory performance
  • Short-term memory ability
  • Tendency for higher education
  • Intelligence
  • Susceptibility to nicotine dependence
  • Susceptibility to opioid drug addiction
  • Tendency for neurotic personality
  • Age-related neuroticism
  • Height
  • Motion sickness
  • Walking speed
  • Pubertal growth (height)
  • Susceptibility to feeling happiness
  • Life satisfaction
  • Tendency to be a morning person
  • Tendency to have many sexual partners
  • Height at birth
  • Tendency for longevity
  • Length of sleep
  • Male pattern baldness
  • BMI-adjusted hip circumference
  • Weight
  • Hair color (blonde)
  • Amount of subcutaneous fat
  • Body Mass Index
  • Tendency for missing teeth
  • Bone mineral density
  • Bone health
  • Susceptibility to being overweight
  • Interest in smoking
  • Muscle mass
  • Tendency for age at menarche
  • Head size in early childhood
  • Tendency for unibrow
  • Metabolic ability of unsaturated fatty acids
  • Tendency for alcohol consumption
  • Interest in drinking
  • Frequency of heavy drinking
  • Aging speed
  • Antioxidant capacity
  • Plasma betaine measurement
  • Tendency to have a sedentary lifestyle
  • Health status of a newborn baby
  • Tendency for red hair
  • Height in early childhood
  • Susceptibility to accumulating fatigue
  • Reaction to tanning
  • Skin color
  • Hair color (black)
  • Eye color
  • Preference for sweetness
  • Preference for salty food
  • Preference for red wine
  • Preference for bread
  • Preference for cheese
  • Preference for tea
  • Preference for caffeine
  • Metabolic ability of Vitamin B12
  • Metabolic ability of Omega-3 (DHA)
  • Athletic ability (agility)
  • Athletic ability (endurance)
  • Tendency to have an active personality
  • Bioenergy production
  • Spatial awareness ability
  • Vitamin D deficiency
  • Calcium concentration in blood
  • Metabolic ability of Omega-6 (DPA n-6)
  • Tendency towards environmentalism
  • Musical ability (pitch accuracy)
  • Amount of trans fatty acids
  • Cardiopulmonary fitness
  • Cognitive ability
  • Youthful appearance
  • Adventurousness
  • Challenging spirit
  • Body fat percentage
  • Good reflexes
  • Susceptibility to sentimentality
  • Metabolic ability of Omega-3 (DPA n-3)
  • Amount of smoking
  • Muscle strength
  • Susceptibility to injury
  • Facial recognition ability
  • Working memory maintenance
  • Age of starting smoking
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\ Prenatal DNA test that also reveals gender, constitution & talents /

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Tokyo Laboratory equipped with the latest facilities

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Full Refund Guarantee

Since 2016, "0" misjudgment troubles.
While our results have overturned those of other companies, our results have never been wrong.

In the unlikely event of an incorrect result, we offer a full refund.

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Free Retest

If the sample is damaged due to accidents or delays during transportation and a test result cannot be obtained, we will perform a retest for free.
seeDNA also covers round-trip shipping, so there are no additional costs.

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Affordable

No fees for deferred or installment payments! There are absolutely no extra costs such as round-trip shipping fees. Please rest assured.

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Comparison with Other Companies

Some companies do not disclose the number of misjudgments or the success rate of tests, but seeDNA precisely shows internal data in numbers.

As of Oct 2025
Cost
seeDNA
99,800 JPY
H Clinic
98,000 JPY
Constitution/Talent Test
seeDNA
Free
H Clinic
N/A
Refund Guarantee
seeDNA
Full
H Clinic
None
Confidentiality
seeDNA
P Mark Certified
H Clinic
Not Certified
Number of Analyses
seeDNA
2 Analyses W Check *1
H Clinic
1 Analysis
Test Success Rate
seeDNA
Public (~100%) *2
H Clinic
Not Public
Track Record
seeDNA
Testing Since 2016
H Clinic
Testing Since Sept 2024
Number of Hospitals
seeDNA
Over 300
H Clinic
100 Locations
Test Coverage (SNP)
seeDNA
700 Locations
H Clinic
52-153 Locations
Minimum Accuracy *3
seeDNA
99.99%
H Clinic
None
Maximum Accuracy
seeDNA
Over 99. 99999999999%
H Clinic
99. 99999999999%

*1: For all paternity tests, we perform double-checking (W check) at no extra cost/sample.

*2: If results cannot be obtained due to sample damage or contamination, you can receive a Free Retest / Refund Guarantee.

*3: The minimum guaranteed accuracy is about 10 times the international standard!

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Flow of Prenatal Paternity DNA Test

We support smooth blood collection
at 300 partner medical institutions nationwide!

1.Order

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・No deferred payment fees

・No installment fees

2.Kit Arrives

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・Same-day shipping for orders within business hours

・Express delivery for both ways

3.Blood Collection

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・We act on your behalf for blood collection reservations

・No restrictions on hospitals for blood collection

4.Mail in Post

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5.Check Results

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・All items necessary for the test are included in the test kit.
There are no documents or ID required from the customer.

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Voices of Customers
Who Actually Took the Test

seeDNA is a world-class genetic testing organization that receives many requests from overseas, including the US, Ukraine, and South Korea.

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これまで2222件のお客様の声をお寄せいただいております。

満足の声
2179

満足(2179件/2222件)

不満(43件/2222件)

SNS, Google口コミ、または弊社に直接届いた2222件のお客様の声に対して弊社から返信を行い、キャプチャイメージとしてホームページに掲載しています。

口コミの集計を始めた2015年から、2179件の「満足」の評価をいただいています。

満足の声だけではなく、不満の声まで、お客様からいただいた全てのアンケートやご意見を掲載しています。

下記の①~③いずれかに該当する場合、「不満」のご意見としてカウントしています。

  • Google口コミの★1~3個
  • アンケートの Q1.で「不満」を選択いただいた場合
  • SNS、メールの文字数1/3以上がネガティブな内容
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\ Customer satisfaction over 98%! /

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Frequently Asked Questions

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Test Kit

We send the sample collection kit and all necessary documents in one package.
There are no documents or items required from the customer.

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Test Kit Contents

  • ・User Guide
  • ・Sample Collection Kit (2 sets of cotton swabs, 1 set of blood collection tubes)
  • ・Documents for Hospital Submission
  • ・Return Envelope
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Easy-to-Understand Report

An easy-to-understand result report including analysis data and photos of the sample can be checked in as little as 3 days.

seeDNA's test results are strictly either a Probability of Paternity 99.99% or more or 0%.
"Probability of Paternity 99.99% or more = Affirmation of Parent-Child Relationship", "Probability of Paternity 0% = Denial of Parent-Child Relationship".

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Private Test Cost / Turnaround Time

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・Turnaround time is counted in business days only, excluding weekends and holidays.

・Blood collection fees must be paid directly by the customer at the medical institution.

・If testing is performed at 6 weeks of pregnancy, an additional test fee of 33,000 yen applies.

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Legal Test Cost / Turnaround Time

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・Turnaround time is counted in business days only, excluding weekends and holidays.

// If testing is performed at 6 weeks of pregnancy, an additional test fee of 33,000 yen applies.

Frequently Asked Questions

Q.What is a prenatal DNA test?

A.
A prenatal DNA test is a test to identify the biological father of an unborn baby during pregnancy by comparing the fetal cfDNA (cell-free DNA) in the pregnant woman's blood with the male's DNA through SNP (single nucleotide polymorphism) analysis. seeDNA analyzes 700 SNPs to provide a clear result of 99.99% or higher, or 0% probability of paternity. Unlike invasive tests such as amniocentesis, it is completed with only a maternal blood sample, so there is no risk of miscarriage to the fetus.

Q.From how many weeks of pregnancy can I take the prenatal DNA test?

A.
seeDNA's prenatal DNA test can be taken from 6 weeks of pregnancy. If you take it at 6 weeks, there is an additional fee of 33,000 yen. From 7 weeks onwards, the test costs 99,800 yen (tax included). Results are available as early as 3 days after the samples arrive.

Q.How accurate is the prenatal DNA test?

A.
seeDNA's prenatal DNA test analyzes 700 SNPs and guarantees a minimum accuracy of 99.99% (about 10 times the international standard) and a maximum accuracy of over 99.99999999999%. We perform a double-check analysis on all cases at no extra cost, and have had zero misjudgments since the service started in 2016. While general SNP analysis by other companies covers 52 to 153 locations, seeDNA covers 700 locations, providing about 4.6 to 13.5 times the analytical coverage.

Q.How is the father's sample collected for the prenatal DNA test?

A.
Basically, it is collected from the buccal epithelium (rubbing the inside of the cheek with a cotton swab). Besides buccal swabs, testing is also possible using toothbrushes, hair, cigarette butts, etc. However, the consent of the person being tested is required.

Q.Does the prenatal DNA test include genetic testing for constitution and talents?

A.
Yes, seeDNA's prenatal DNA test includes a free genetic test of 87 items related to the constitution and talents of parents and children. We analyze a wide range of items such as memory, mathematical ability, athletic ability (agility/endurance), height, bone density, and sleep duration. Other companies may not offer constitution/talent testing.

お問い合わせ

For customers who have already ordered,
smooth handling is possible if you include the 'Order Number' in your inquiry.'Order Number'

Handling of Personal Information in Inquiries

(1) Name of the Business Operator

seeDNA Inc.

(2) Personal Information Protection Administrator (or agent) name/title, affiliation, and contact information

Customer Support Team Leader

Email: support@seedna.co.jp

Phone: 03-6659-2997

(3) Purpose of Use of Personal Information

To reply to inquiries received.

(4) Provision of Personal Information to Third Parties

We will not provide acquired personal information to third parties except when required by law.

(5) Outsourcing of Personal Information Handling

We do not outsource all or part of the handling of acquired personal information.

(6) Consequences of Not Providing Personal Information

Providing personal information is voluntary. If you do not provide some of the personal information, we may not be able to reply to your inquiry.

(7) Requests for Disclosure, etc., of Retained Personal Data and Inquiry Counter

Upon request from the principal, we will respond to disclosure, notification of purpose of use, correction/addition/deletion of content, suspension of use, erasure, and suspension of provision to third parties (hereinafter referred to as disclosure, etc.) of personal data held by us.
For the counter responding to disclosure, etc., please refer to 'Contact for complaints, consultations, etc., regarding our handling of personal information' below.

(8) Acquisition of Personal Information by Methods Not Easily Recognized by the Principal

We do not acquire personal information by methods not easily recognized by the principal, such as using cookies or web beacons.

(9) Safety Management Measures for Personal Information

We will take necessary and appropriate measures to prevent and correct leakage, loss, or damage of acquired personal information, and otherwise safely manage personal information.
After replying to the inquiry, the acquired personal information will be deleted within our company.

(10) Personal Information Protection Policy

Please see the personal information protection policy on our website.

(11) Contact for complaints, consultations, etc., regarding our handling of personal information

[Name of Counter]
Personal Information Inquiry Counter

[Contact Information]
■ Counter Manager: Customer Support Team Leader
■ Address: 2nd Floor, Takenotsuka Building, 3-10-1 Takenotsuka, Adachi-ku, Tokyo
■ Phone: 03-6659-2997
■ FAX: 03-6869-9446
■ Email: support@seedna.co.jp

お客様サポート

ご不明点などございましたら、弊社フリーダイヤルへお気軽にご連絡ください。

0120-919-097
\土日も休まず営業中/営業時間:月~日9:00-18:00(祝日を除く)
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