Can NIPT and prenatal paternity DNA testing be done on the same day?

NIPT (Non-Invasive Prenatal Testing, Non-Invasive Prenatal Testing) and NIPPT(Non-Invasive Prenatal Paternity Testing, Non-Invasive Prenatal Paternity Testing) are both based on analyzing free foetal DNA from a pregnant woman’s blood. These tests are performed for different purposes, but it is technically possible to undergo them at the same time. Each of these tests is described below.

NIPT (Non-Invasive Prenatal Testing)

  • Purpose: Mainly used to screen for chromosomal abnormalities. It assesses the risk of Down syndrome (trisomy 21), Edwards syndrome (trisomy 18) and Pato syndrome (trisomy 13).
  • Methods: foetal DNA fragments are analysed from the mother’s blood to detect abnormalities in the number and structure of chromosomes.

NIPPT (Non-invasive prenatal paternity testing)

  • Purpose: This is done to identify who the father of the foetus is.
  • Method: paternity is confirmed by comparing the DNA of the fetus taken from the mother’s blood with that of the suspected father.

Possibility of receiving them at the same time.

  • Technical point of view: as both tests use the same sample (maternal blood), it is technically possible to collect samples at the same time and analyse them for different purposes.However, the amount of blood required is between 20 ml and 30 ml.Some pregnant women may find it difficult to collect sufficient blood due to morning sickness.Please note that this is not always possible.
  • Considerations for implementation: however, if these tests are performed at the same time, it is necessary to check in advance whether the facility providing the tests and the test kits are suitable for both purposes. It is also important to fully consult with the healthcare provider and establish an interpretation and follow-up plan for the test results.

Although there are few technical limitations to performing NIPT and NIPPT at the same time, it is advisable to fully understand the implications, benefits and limitations of each test before undergoing them.There are also ethical and legal aspects involved in these tests, so it is important to make the best decision through consultation with a professional.

ヒロクリニックDNA出生前親子鑑定

ヒロクリニックのDNA出生前親子鑑定(NIPPT)は、業界最安値で全国にあるヒロクリニック直営院で対応しております。妊娠6週目以降の方が検査可能で一度の来院で終了するので手間も最小限で済みます。再検査時が必要な場合は無料で実施しておりますのでご安心ください。また、出生前検査で50000万件以上の実績がある東京衛生検査所で検査を実施しておりますので、信頼できる結果をご提供します。ただし、お手数ですが、カップル両方に来院いただきます。これはできるだけ正確な検査結果をご提供するためです。気になる方はコチラをご確認いただき、ご予約・お問い合わせください。

Supervisor of the article


Dr. Hiroshi Oka

Director of CAP Laboratory

Graduated from Keio University, Faculty of Medicine

Doctor of Medicine

Medical Doctor