seednaで出生前診断を行いました（Instagram）
2026.04.10
The Newborn Postnatal Test by seeDNA Genetic Medical Laboratories is Japan's first genetic testing service targeting postnatal babies to check the risk of chromosomal aneuploidies such as Down syndrome or sex chromosome aneuploidies such as Klinefelter syndrome.
It is widely known that early diagnosis is crucial in treating various diseases. However, some feel resistance to prenatal testing. Even for those, a test equivalent to Prenatal NIPT can be easily taken after the baby is born.
Why not clear your anxieties about your child's genetic conditions with the Newborn Postnatal Test (Postnatal NIPT) by seeDNA Genetic Medical Laboratories?
- Table of Contents
What is Newborn Postnatal Test (Postnatal NIPT)?
This is a genetic test that can be taken easily, even for those who had resistance to receiving genetic testing during pregnancy.
It examines the risk of 8 types of chromosomal abnormalities from the sample (oral mucosa) collected by gently rubbing the inside of the baby's cheek with a testing cotton swab.
In addition to syndromes that might be perceived as a genetic individuality rather than a disease due to the lack of conspicuous symptoms, you can understand the risk of genetic conditions that tend to be accompanied by serious complications.
You can perform the test with the same items at 1/3 the cost of Prenatal NIPT.
Accurate
The Newborn Postnatal Test is a clinical research utilizing a patent developed by seeDNA Genetic Medical Laboratories, an ISO9001 certified institution with zero misdiagnosis cases in prenatal DNA parentage testing.
Easy
No hospital visit is required for a blood draw. You can receive the test by mail from any of the 47 prefectures. There is nothing for the customer to prepare, such as referral letters or insurance cards.
Fast
There is no age limit for testing.
Since the sample can be safely collected with an easy method, testing is OK even on the day the baby is born.
You can check the risks of various genetic diseases of your baby in as fast as 3 days.
Safe
In the unlikely event that a serious genetic condition is found, appropriate treatment can be received early.
Even if a test result cannot be obtained due to the condition of the sample, etc., this is a secure test where you can receive a retest with all round-trip shipping costs of the sample collection kit and speed testing fees covered by seeDNA Genetic Medical Laboratories, or receive a partial refund of the testing fee.
* This is not a definitive diagnosis for a disease, but rather a clinical research study to confirm the risks of 8 types of genetic conditions.
Full Refund Guarantee
In the unlikely event of a result error※1, the test fee will be fully refunded.
※1: If no disease is found in a "high risk" result, or if a disease is found in a "low risk" result.
Free Retesting
If results cannot be obtained due to sample transport issues or damage, we will perform a retest free of charge.
With no additional cost, it will be processed as a speed test, allowing you to check the results in 3 to 5 days. No round-trip shipping fee is required.
Lowest Price in Japan
Not only is the round-trip shipping for the test kit free, but installment and deferred payment fees are also free!
Even if the sample is damaged due to a mailing accident, we will retest free of charge.
Fast Due to Fully Automated System
By introducing state-of-the-art testing equipment, results are available in as fast as 3 days!
Furthermore, you can have peace of mind as we are a testing institution with zero human errors through automated analysis.
Customer Voices
Satisfied Voices
2029reviews
■ Satisfied (2029 / 2069 reviews)
■ Dissatisfied (40 / 2069 reviews)
We reply to all 2069 customer reviews received directly or via SNS/Google and publish them as capture images on our homepage.
Since we started aggregating reviews in 2015, we have received 2029 'Satisfied' ratings.
We publish all surveys and opinions received from our customers, including both satisfied and dissatisfied voices.
If any of the following ① to ③ apply, it is counted as a 'Dissatisfied' opinion.
- 1 to 3 stars on Google reviews
- Selecting 'Dissatisfied' in Q1 of the survey
- More than 1/3 of the text in SNS or email is negative
Full Refund Guarantee
In the unlikely event of a result error※1, the test fee will be fully refunded.
※1: If no disease is found in a "high risk" result, or if a disease is found in a "low risk" result.
Free Retesting
If results cannot be obtained due to sample transport issues or damage, we will perform a retest free of charge.
With no additional cost, it will be processed as a speed test, allowing you to check the results in 3 to 5 days. No round-trip shipping fee is required.
Lowest Price in Japan
Not only is the round-trip shipping for the test kit free, but installment and deferred payment fees are also free!
Even if the sample is damaged due to a mailing accident, we will retest free of charge.
Fast Due to Fully Automated System
By introducing state-of-the-art testing equipment, results are available in as fast as 3 days!
Furthermore, you can have peace of mind as we are a testing institution with zero human errors through automated analysis.
Postnatal NIPT Testing Items
In some European countries, over 75% of pregnant women check the risk of genetic diseases in their unborn babies. However, in Japan, due to restrictions on taking tests, high testing costs, and ethical resistance regarding the unborn baby, many women give birth without taking Prenatal NIPT.
With the postnatal NIPT, which is the only one in Japan conducted by seeDNA Genetic Medical Laboratories, the same test as Prenatal NIPT can be easily performed at home.
It also reveals sex chromosome abnormalities such as Klinefelter syndrome and Turner syndrome, which are difficult to identify by appearance alone.
4 Reasons Why
seeDNA Genetic Medical Laboratories is Chosen
Whether you have received Prenatal NIPT※1 or not, it is important to confirm the health risks of your precious newborn baby. Postnatal NIPT is a genetic testing service that can only be conducted by seeDNA Genetic Medical Laboratories in Japan.
Test results can be confirmed in as fast as 3 days after the sample arrives at our office (Tokyo Lab).
- 1Reliable and Secure International Certified Institution
- seeDNA Genetic Medical Laboratories has obtained the international quality assurance standard 'ISO9001'. We are a secure and reliable institution specializing in genetic testing and DNA testing, with projects selected by various public organizations such as the Tokyo Metropolitan Government, JETRO, and Adachi Ward.
- ・2024: Tokyo Metropolitan Government, Business Feasibility Assessment
・2023: Tokyo Metropolitan Government, Foreign Patent Application Cost Subsidy
・2022: JETRO, Foreign Patent Application Support Project
・2021: Tokyo Metropolitan Government, Capital Investment Support Project for Pioneering Business Promotion
・2020: Adachi Ward, New Product/New Business Development Subsidy - 2Genetic Counseling & Subsidy for Confirmatory Diagnosis Costs
- In the unlikely event that a 'high risk' result is found in even one item, we will reimburse the confirmatory diagnosis and counseling fees conducted at a medical institution.
- There is no designation of medical institutions for confirmatory diagnosis or counseling.
You can receive the diagnosis at a local obstetrics and gynecology clinic, internal medicine clinic, or pediatric hospital.
If you submit the receipt from your visit, we will cover half of the confirmatory diagnosis or counseling fees.※2 - 3Testing OK at 1/3 the Cost of Prenatal NIPT
- Easily accessible even for those who had resistance to testing the unborn baby during pregnancy.
- → With postnatal NIPT, there is no risk of miscarriage, which is a concern in invasive confirmatory diagnoses.
Early treatment or intervention in the event that an abnormality is found can improve the quality of life for children with genetic conditions and their families, making it a very important test. - 498% Customer Satisfaction
- We developed Japan's first (and the world's third) Prenatal DNA Parentage Test (NIPPT) and are a reliable testing laboratory with zero misdiagnosis troubleshooting.
- → Please check the customer voices received from our actual clients.
→ Specialized staff provide customer support on Saturdays and Sundays. Feel free to contact us for free consultations via toll-free calls or chat even on weekends.
*1: Excludes those who have already received a confirmatory diagnosis such as amniocentesis or chorionic villus sampling.
*2: Submission of a confirmatory diagnosis report and receipt is required. The counseling fee subsidy is limited to once, up to 10,000 yen.
Difference Between Newborn Postnatal Test and Prenatal NIPT
Comparison Table of Newborn Postnatal Test and Prenatal NIPT by seeDNA Genetic Medical Laboratories
| Newborn Postnatal Test | Prenatal NIPT | |
|---|---|---|
| Testing Items | Newborn Postnatal Test ・Down Syndrome (Trisomy 21) ・Edwards Syndrome (Trisomy 18) ・Patau Syndrome (Trisomy 13) ・Turner Syndrome (XO) ・Klinefelter Syndrome (XXY) ・Triple X Syndrome (XXX) ・XYY Syndrome (XYY) ・All Chromosomal Abnormalities (Aneuploidy): Chromosomes 1 to 22 | Prenatal NIPT ・Down Syndrome (Trisomy 21) ・Edwards Syndrome (Trisomy 18) ・Patau Syndrome (Trisomy 13) ・Turner Syndrome (XO) ・Klinefelter Syndrome (XXY) ・Triple X Syndrome (XXX) ・XYY Syndrome (XYY) ・All Chromosomal Abnormalities (Aneuploidy): Chromosomes 1 to 22 ・Gender Test |
| Additional Test | Newborn Postnatal Test × None | Prenatal NIPT Microdeletion |
| Cost | Newborn Postnatal Test 44,800 yen (including tax and round-trip shipping) | Prenatal NIPT 198,000 yen (including tax, round-trip express shipping, and blood draw fee) |
| Speed Testing | Newborn Postnatal Test 3–5 days | Prenatal NIPT × None |
| Regular Testing | Newborn Postnatal Test 7–9 days | Prenatal NIPT 6–8 days |
| Sample | Newborn Postnatal Test Cotton swab rubbed inside the baby's mouth | Prenatal NIPT Maternal blood |
| Clinic Visits | Newborn Postnatal Test None | Prenatal NIPT Once (for blood draw only) |
| Testing Period | Newborn Postnatal Test From the day of birth | Prenatal NIPT Weeks 10 to 16 |
| Age Limit | Newborn Postnatal Test None | Prenatal NIPT None |
| Referral Letter | Newborn Postnatal Test Not required | Prenatal NIPT Not required |
| Confirmatory Diagnosis | Newborn Postnatal Test 50% Subsidy | Prenatal NIPT Full Subsidy |
3 Reasons to Receive Postnatal NIPT
In the case of genetic conditions caused by chromosomal aneuploidy, early detection and intervention can improve the quality of life in three aspects for both the child and the entire family.
Health Management
Children with genetic conditions such as Down syndrome or Patau syndrome have a higher risk of health issues like heart diseases, hearing or vision problems, and hypothyroidism. Therefore, regular health management by medical experts at hospitals is required.
Education, Rehabilitation & Developmental Support
Besides physical disabilities, special support is often needed in language, motor skills, social abilities, and overall development due to intellectual disabilities. Early detection is important to support development and enhance independence in daily life through early intervention programs. Early educational support contributes to social participation and learning ability improvement, helping children with disabilities maximize their potential.
Family Support
Families raising children with genetic conditions require psychological and social support. Early access to correct information and resources to prepare for child-rearing is crucial for the child's development.
Know the Risk of Genetic Conditions in Unborn Babies
Testing Flow
1.Application & Payment
Free consultations are available via toll-free calls, chat, or email. Applications from this site are accepted 24 hours a day. Payment methods include Paidy (deferred payment), credit card, bank transfer, and post office transfer.● Free Installment Fee● Free Deferred Payment Fee
2.Sample Collection
The delivered testing kit contains 2 sterilized swabs for genetic testing.
Gently rub the inside of your child's cheek vertically and horizontally for about 10 seconds.● No painful blood draw required● Testing OK even on the day of birth
Gently rub the inside of your child's cheek vertically and horizontally for about 10 seconds.● No painful blood draw required● Testing OK even on the day of birth
3.Mailing the Sample
Place the collected sample and required documents into the enclosed return envelope and drop it into a mailbox.● Free round-trip shipping● Free retest guarantee even in case of mailing accidents
4.Receiving Test Results
Once you receive the test completion email, you can check the results from My Page on our website.
Fee & Period
Tax included, round-trip express shipping included
* The period counts only weekdays, with the day the sample arrives at seeDNA Genetic Medical Laboratories as Day 0.
If the sample arrives in the afternoon, it will be +1 business day.
* The period counts only weekdays, with the day the sample arrives at seeDNA Genetic Medical Laboratories as Day 0.
If the sample arrives in the afternoon, it will be +1 business day.
FAQ
Frequently Asked Questions
Q.What is the Newborn Postnatal Test (Postnatal NIPT)?
A.
The Newborn Postnatal Test is a genetic test that checks the risk of 8 types of chromosomal abnormalities, such as Down syndrome (Trisomy 21), using oral mucosa collected by gently rubbing the inside of a baby's cheek with a swab. It is the only service of its kind in Japan, provided by seeDNA Genetic Medical Laboratories, allowing the same test items as prenatal NIPT to be taken after birth(1). It is not a definitive diagnosis for a disease, but rather a clinical research study to confirm the risk of genetic conditions.
Q.What is the difference between the Newborn Postnatal Test and Prenatal NIPT?
A.
There are three main differences. ①Cost: The postnatal test is 44,800 yen, and the prenatal test is 198,000 yen, which is about 1/3 of the cost. ②Sample and Clinic Visits: The postnatal test does not require clinic visits as the baby's oral mucosa is collected at home, whereas the prenatal test requires one clinic visit for a maternal blood draw. ③Testing Period: The postnatal test can be taken from the day of birth, while the prenatal test is for gestational weeks 10 to 16. The testing items are the same: 8 types of chromosomal abnormalities.
Q.From when can the Newborn Postnatal Test be taken?
A.
It can be taken from the day the baby is born. There is no age limit. Since the method collects oral mucosa using a cotton swab, samples can be safely collected even from newborns. The test kit is delivered by mail to all 47 prefectures nationwide, and no referral letter or insurance card is required.
Q.What are the testing fees and guarantee systems?
A.
The test fee is 44,800 yen (including tax and round-trip shipping). Installment and deferred payment fees are also free. There are three types of guarantee systems. ①Full Refund Guarantee: Full refund of the test fee if no disease is found in a 'high-risk' result, or if a disease is found in a 'low-risk' result. ②Free Retesting: Free retesting with no additional cost if results cannot be obtained due to mailing accidents or sample damage. ③50% Subsidy for Confirmatory Diagnosis Costs: If a high-risk result occurs, half of the cost of confirmatory diagnosis and counseling at a medical institution will be reimbursed (up to 10,000 yen).
Q.Why should we take postnatal NIPT?
A.
Early detection of chromosomal abnormalities improves quality of life in three aspects(2). ①Health Management: Heart disease, hearing/vision impairments, hypothyroidism, etc., associated with Down syndrome or Patau syndrome can be understood early, allowing appropriate medical intervention. ②Developmental Support: Early intervention programs can be started to promote the development of language, motor skills, and social abilities. ③Family Support: Early access to correct information and resources allows families to prepare for child-rearing. While in some European countries over 75% of pregnant women check for genetic disease risk before birth(3), Japan currently has a low testing rate due to costs and ethical resistance. The postnatal test is effective as an alternative.
References
- (1) Ministry of Health, Labour and Welfare "Summary of Information Provision on Prenatal Testing such as NIPT" / 2023
- (2) National Center for Child Health and Development "About NIPT"
- (3) Ultrasound in Obstetrics & Gynecology "European uptake of cell-free DNA screening" / 2020
- (4) ISO (International Organization for Standardization) "ISO 9001 Quality Management System Standard"
- (5) seeDNA Genetic Medical Laboratories "Newborn Postnatal Test (Postnatal NIPT)"