妊娠中の不安、1人で抱えていませんか?
満足度
検査という安心を選べるのはヒロクリニック
ヒロクリニックが選ばれる理由 ヒロクリニックが選ばれる理由 ヒロクリニックが選ばれる理由
ヒロクリニックならたとえ陽性になっても最後までフォローアップ
ヒロクリニックと一般産婦人科のNIPT比較
NIPT・クアトロ検査・エコー検査 比較表

Dr. Hiroshi Oka

Born in Okayama Prefecture
Medical Corporation Fukumikai, Hiro Clinic General Director / Lab Director

After graduating from Keio University School of Medicine, passed the national medical licensing examinations in both Japan and the United States. Obtained a Ph.D. in Medicine in 2 years after completing clinical training.
Serves as a visiting professor at a professional university and works actively as a medical doctor at an NIPT specialized clinic. Holds a Lab Director qualification, which only about 20 people in Japan possess.
Regarding the current situation where NIPT in Japan faces various restrictions and users are ultimately unable to receive what they need, I established a testing laboratory myself with the desire to provide the world’s highest level of NIPT.

Hiro Clinic’s NIPT
5 Assurances

  • 1Comprehensive Medical System
  • Various specialists, including obstetrician-gynecologists, pediatricians, and clinical geneticists, work together to provide medical care
    Responding to pregnant women’s questions and anxieties from multiple perspectives
    Each clinic is connected via a network, ensuring smooth collaboration among specialists
  • Read more
  • 2Wide Range of Testing Items
  • Basic trisomy testing for chromosomes 13, 18, and 21
    Whole chromosome aneuploidy testing (chromosomes 1 to 22 and sex chromosomes)
    Detection of microdeletion and duplication disorders (143 types)
    Whole chromosome partial deletion and duplication disorders (over 54 types)
  • Read more
  • 3Latest Genomic Analysis Technology
  • Read more
  • 4Unique Positive Score Report
  • Analyzed data from over 75,000 pregnant women in Japan
    Provides a “Positive Score” and “Positive Predictive Value” for free in the event of a positive result
    Accurate information provision based on data specifically tailored to pregnant women in Japan
  • Read more
  • 5Comprehensive Aftercare Support
  • 3 selectable amniotic fluid test support options: In the event of a positive result, up to 300,000 yen is subsidized depending on the plan
    Applicable even for amniotic fluid tests performed at medical institutions other than Hiro Clinic
    Also provides referrals to medical institutions where amniotic fluid tests can be performed
  • Read more

Hiro Clinic NIPT Philosophy

Respect for the Right to Know
We respect the “right to know” of pregnant women and their families so they can face a healthy delivery with peace of mind.
Towards a Correct Understanding of NIPT
We aim for NIPT (Non-Invasive Prenatal Testing) to be widely understood not only as a way to know the health status of the fetus but also as something that leads to maintaining the mother’s health.
IT × Medicine
Through the utilization of IT, we improve convenience for pregnant women, enhance testing accuracy, and provide prompt responses.

お知らせ

「ウィズマインド」に掲載されました!

Announcements

NIPT and Pregnancy Useful Columns

ARTICLES

Anxiety regarding
children with intellectual disabilities

Feeling anxious about the future of a child with intellectual disabilities is completely natural as a parent.

“Will this child be able to work when they grow up…?”
“How will this child survive after their parents are gone…?”
We also face such thoughts and concerns every day.

How common are these intellectual disabilities?
Detailed information about intellectual disabilities is provided on this page, but to conclude, not all intellectual disabilities can be tested for with NIPT.
This is because intellectual disabilities more often occur independently of genetics. However, it is a natural thought to want to rule out that possibility as much as possible before birth.
Is it possible to detect intellectual disabilities using the three types of NIPT (chromosome 13, 18, and 21 testing) performed at most facilities? Only the chromosome 21 test (Down syndrome test) targets intellectual disability. For trisomy 13 and 18, the physical disabilities are too severe, making it difficult to even recognize the intellectual disability. In other words, the condition is so severe that they often pass away early, making it impossible to even know if there is an intellectual disability.

However, isn’t the parents’ biggest worry that the child grows physically but continues to live with an intellectual disability?
If this can be known before birth, it is a parent’s heart to want to detect as many conditions as possible. Now, let’s consider in what cases intellectual disabilities might occur.
In the case of trisomy 13 and 18 mentioned earlier, the reason intellectual disability (as a standalone symptom) doesn’t just present itself is that these chromosomes carry far too many critical genes, so cases where it is *only* an intellectual disability are rare. Since they carry many genes related to life, it becomes difficult to sustain life before intellectual disability even becomes the primary concern. Now, what happens if there is an abnormality in the number or sequence of *some* genes? In many cases, life can be sustained, but it is often accompanied by impairment of the highly functional brain, causing intellectual disability.
NIPT is basically a test that examines the amount of chromosomes. Since it cannot check for chromosomal sequence abnormalities, what NIPT can test for is strictly the partial changes in the amount of chromosomes. The most common genetic abnormalities are those of amount rather than sequence. Therefore, NIPT is very useful because it can investigate these abnormalities in amount.

So, how can we test for such intellectual disabilities?

First, those who view this website will likely notice that there are multiple options for NIPT. It means that there are tests other than those for chromosomes 13, 18, and 21 typically recommended by obstetricians. These “other tests” are widely performed around the world. Particularly well-known are sex chromosome abnormalities. Also, microdeletion and duplication syndromes involving parts of chromosomes are well-known conditions. This is because DiGeorge syndrome, which is included in this category, is said to be the second most common intellectual disability. It is the most common intellectual disability after Down syndrome. The average lifespan is said to be around 50 years. As I mentioned earlier, if only a part of a chromosome is missing, it is possible to sustain life, so with modern medicine, they may have a lifespan stretching into their 50s or 60s. However, their intelligence is typically around an IQ of 50, which makes it very difficult to live independently. Furthermore, sex chromosome abnormalities are accompanied by infertility and growth disorders in the child. By knowing this early, growth disorders can be prevented, and by the individual knowing they have a high probability of infertility, it becomes possible to receive advanced medical care such as TESE. Regarding sex chromosome abnormalities, while they may not be severe enough to be called intellectual disabilities, they are generally accompanied by learning disabilities. For more detailed information on these, please refer to the respective pages.

What I want to emphasize here is that NIPT is not limited to just three types; a variety of tests are now available, and many of them can early detect conditions accompanied by intellectual and developmental disabilities for which there is completely no cure. I harbor a certain amount of anxiety that NIPT is gradually spreading without these facts being fully communicated to pregnant women.

This is explained in detail on this website, so please take a look. If it is difficult to understand through text alone, we provide daily videos on YouTube. Please refer to those as well.

What is the difference between Hiro Clinic and other clinics (including certified facilities)?

The main differences between Hiro Clinic and other clinics (primarily certified facilities accredited by the Japanese Association of Medical Sciences) lie in the “freedom of testing” and “ease of consultation”.
First, regarding testing items, certified facilities generally limit tests to three types: trisomies 21, 18, and 13. In contrast, Hiro Clinic offers a wide range of tests, including all chromosomes, microdeletions, and fetal sex determination.
Consultation conditions also differ. While certified facilities may require age restrictions (e.g., “35 years or older”) or referrals, Hiro Clinic has no age restrictions and allows testing from an early stage, once a fetal heartbeat is confirmed. Furthermore, the speed of receiving results in as little as 2 days through collaboration with a domestic laboratory, and the cost-effectiveness with plans starting from the 60,000 yen range, are major advantages.
On the other hand, certified facilities mandate thorough face-to-face genetic counseling, providing a sense of security through strictly managed systems. Please check the comparison page on Hiro Clinic’s official website for details and choose the option that best suits your needs.

What kind of diseases can be detected?

Hiro Clinic is a medical institution that primarily specializes in NIPT (Non-Invasive Prenatal Testing). Through this test, chromosomal abnormalities in the unborn baby can be investigated with high accuracy using the mother’s blood.
Specifically, the following information can be obtained. First, the possibility of major chromosomal disorders such as Trisomy 21 (Down syndrome), Trisomy 18, and Trisomy 13 can be identified. Furthermore, depending on the plan you choose, testing can comprehensively cover all autosomes from 1 to 22, as well as the conditions of “microdeletion and duplication syndromes” where a part of a chromosome is missing. In addition, sex chromosome abnormalities and the baby’s sex can also be determined.
A major feature is that clinics are located at multiple bases across Japan, there are no age restrictions, and testing is available from the time a fetal heartbeat is confirmed. For details, please check the official Hiro Clinic website and consider your options.

What should I do if the result is positive? Does the amniotic fluid test cost money?

If the NIPT result at Hiro Clinic is positive, it is recommended to undergo an “amniotic fluid test” to confirm the diagnosis. An amniotic fluid test usually costs around 100,000 to 200,000 yen, but Hiro Clinic offers three types of “amniotic fluid test support” to reduce the burden on patients.
Specifically, you can choose from “Light,” which provides a subsidy of up to 100,000 yen for a support fee of 3,300 yen (tax included), “Standard,” offering up to 200,000 yen for 5,500 yen (tax included), and “Wide,” which subsidizes up to 300,000 yen including various expenses like ultrasound fees for 11,000 yen (tax included). Payment is required only once at the first visit, and if you undergo Early NIPT, the support remains applicable without additional costs.
This system applies even if the test is conducted at another clinic. Additionally, upon a positive result, we provide a “Positive Score” report that quantifies the predictive value and have a consultation system with specialists in place, offering robust support so you can make future decisions calmly.
For more details, please refer to Hiro Clinic’s post-positive aftercare section.

Why is the testing so fast here? Is there a difference in accuracy?

The main reason testing is fast at Hiro Clinic is that we have our own testing laboratory within our corporate group in Japan.
Many medical institutions transport collected samples to overseas testing facilities, which takes about 1 to 2 weeks for results to arrive. In contrast, Hiro Clinic completes the testing domestically and further streamlines the process by introducing automated liquid handlers and the latest next-generation sequencers, achieving rapid notification in as little as 2 to 3 days.
Regarding accuracy, it is comparable to other clinics and certified facilities. NIPT itself has exceptionally high accuracy, with a negative predictive value reaching 99.99%.

What is the probability of needing a retest due to insufficient fetal DNA?

At Hiro Clinic, the probability of requiring a retest due to a “test uninterpretable (judgment suspended)” result caused by a lack of fetal DNA or other reasons is extremely low, estimated at around 0.3 to 0.4%.
Hiro Clinic’s NIPT boasts an extremely high “result reporting rate,” with performance data showing that 99.98% of patients receive a result. The primary cause for an uninterpretable result is that the amount of fetal DNA contained in the mother’s blood (fetal fraction: FF) does not meet the standard. In particular, DNA concentration may be low when the gestational age is early, or depending on the mother’s weight or constitution. In such cases, by waiting about 1 to 2 weeks and redrawing blood, over 85% of these cases can be accurately determined.
In the unlikely event that a determination still cannot be made after a retest, you will consult with a doctor regarding how to proceed (such as transitioning to an amniotic fluid test) depending on the situation. Details can be found on Hiro Clinic’s explanation page regarding uninterpretable results.

Can I take the test even if my gestational age is too early or too late?

At Hiro Clinic, it is possible to undergo NIPT testing even if your gestational age is “too early” or “too late.”
First, regarding cases that are “too early,” while standard clinics generally require consultations from the 10th week of pregnancy, at Hiro Clinic, you can be tested as soon as a fetal heartbeat is confirmed via ultrasound. The major advantage of early testing is that, in the unlikely event of a positive result, you secure ample time for subsequent detailed testing and decision-making.
Next, concerning “too late” cases, there is no upper limit on gestational weeks for consultation. We flexibly accommodate testing after 15 weeks or “Late NIPT” past 18 weeks, so even those who develop anxieties in the later stages of pregnancy can be tested.
However, since there are legal restrictions and medical deadlines for the period during which an amniotic fluid test (the definitive diagnosis if positive) can be performed, it is recommended to undergo testing with sufficient time to spare, around the 14th week.

Which should I get first: a fetal dock (ultrasound) or NIPT?

At Hiro Clinic, when considering NIPT and a fetal dock (detailed ultrasound), we fundamentally recommend “taking NIPT first.”
NIPT can be performed with just a blood draw and can determine the possibility of chromosomal abnormalities with extremely high accuracy. By first confirming the overall risk with NIPT, if it is negative, you can safely return to your regular prenatal checkups. If the result is positive or suspended, proceeding to a fetal dock or amniotic fluid test as the next step is also medically logical.
While there are cases where patients undergo NIPT after an abnormality is pointed out during a fetal dock first, checking the details with specialized ultrasound based on the NIPT results is considered to be more efficient for diagnosis and reduces the mental burden on the pregnant woman.
As of 2026, our clinic also offers plans combining NIPT and ultrasound testing.
Please consult with a doctor regarding the optimal time for testing.

Please tell me about the payment methods and how long it takes

Here is information regarding our clinic’s payment methods and the required time on the day of the test.
【Payment Methods】
As of 2026, our clinic has introduced a variety of payment methods with patient convenience in mind. In addition to cash payments, major credit cards (VISA, Mastercard, JCB, American Express, Diners, etc.) are accepted. We also support various QR code payments and electronic money, so please choose the method that suits you best.
【Required Time on the Day】
The process from arrival to departure is typically very smooth, taking about 30 minutes to 1 hour. Wait times are minimal due to the advance reservation system, and the day proceeds in the order of filling out a medical questionnaire, counseling by a doctor, and drawing blood. We have established a system that allows you to comfortably undergo testing between work or childcare.

This site is registered on wpml.org as a development site. Switch to a production site key to remove this banner.