出生前親子鑑定

Time schedule from conception to prenatal paternity test

親子鑑定　NIPPT　DNA鑑定　検査　妊娠中　スケジュール

↓今すぐDNA出生前親子鑑定を予約する↓

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The following is a timetable and things to think about from the time of conception to the time of prenatal paternity testing, so that you can proceed with confidence and be prepared.

NIPPTNIPTAmniotic DiagnosisAbortion for internal useAbortion
4th week of pregnancyperiod of study (investigation)period of study (investigation)period of study (investigation)possibleSurgical possibilities
妊娠６週checkablecheckableperiod of study (investigation)possibleSurgical possibilities
妊娠9週checkablecheckableperiod of study (investigation)possibleSurgical possibilities
妊娠１５週checkablecheckablecheckableunlikelySurgical possibilities
妊娠20週checkablecheckablecheckableunlikelySurgical possibilities
妊娠20週以降checkablecheckablenon-inspectableunlikelySurgery is impossible.
NIPPT: prenatal parent-child identification, NIPT: prenatal diagnosis

First trimester (4 to 6 weeks of pregnancy)

Things to consider.

  • Pregnancy confirmation: once pregnancy is confirmed, the first step is to see a doctor to ascertain the number of weeks of pregnancy.
  • Establish the need for paternity testing: if you decide that you need to identify the father, gather information about prenatal paternity testing as soon as possible. You have two weeks before the test starts, so fully consider where to test, whether to test and what to test for. If you are at Hiro Clinic, appointments can be obtained online, so please book in advance.
  • Time schedule
  • Early pregnancy medical checks: to ensure that the pregnancy is normal and to check the health of the mother and foetus. This includes ultrasound and blood tests.
  • Research DNA testing agencies: research reputable agencies that carry out testing and check their methods, costs and timeframes for results.

From 6th week of pregnancy

Things to consider.

  • Consider non-invasive prenatal paternity testing (NIPPT): from the sixth week of pregnancy onwards, non-invasive prenatal paternity testing can be performed as fetal DNA can be detected in maternal blood. This method is generally recommended because of its low risk to the mother and fetus.
  • Time schedule
  • Counselling and consultation: at the laboratory, you will be counselled about the testing process, the reliability of the results and legal issues. Procedures and consent to obtain a DNA sample from the father are required.
  • Preparation for DNA sample collection: a blood sample from the mother and a DNA sample (usually saliva or cells from the oral cavity) from the suspected father. Samples can be collected from 6 weeks of pregnancy onwards.

Test conducted (from 6 weeks’ gestation onwards).

Things to consider.

  • Performing the test and waiting for results: after the test is performed, it usually takes two to three weeks to receive the results. Results may be available online.
  • Time schedule
  • Receive results: once the results are received, review the results with your doctor or specialist and, if necessary, discuss future actions and legal procedures.

Subsequent actions.

Things to consider.

  • Outcome-based responses: depending on the outcome, consider how to resolve family and legal issues. For example, consult with lawyers and experts on legal responses (e.g. recognition, child support, etc.) if the father is recognised.
  • Time schedule
  • Legal procedures and support: where necessary, be prepared to receive legal support to carry out procedures relating to recognition and child support.

Summary

When considering a prenatal paternity test, a non-invasive test that can be carried out after six weeks of pregnancy is commonly used.Early selection of an assessment organisation and counselling will help the process to proceed smoothly.It is also important to carefully consider the response to the results and to obtain legal support if necessary.

Hiro Clinic’s DNA Prenatal Paternity Testing

Hiro Clinic’s DNA Prenatal Paternity Testing (NIPPT) is available at the industry’s lowest price at Hiro Clinic’s directly managed locations nationwide. Testing can be done from the 6th week of pregnancy onward, and the process is completed in a single visit, minimizing inconvenience. If a retest is necessary, it will be conducted free of charge, so you can rest assured. Additionally, tests are conducted at the Tokyo Sanitary Laboratory, which has over 50,000 cases of prenatal testing experience, ensuring reliable results. However, both partners are required to visit the clinic to ensure the most accurate test results. For more information, please check here and make your reservation or inquiry.

医師監修 監修日：2024年9月4日

岡 博史 （おか ひろし）

医師・医学博士 ／ ヒロクリニック統括院長

YouTubeチャンネルなどを通じて、遺伝子やNIPT（新型出生前診断）についてわかりやすく発信しています。

略歴

  • 1996年 慶應義塾大学医学部 卒業
  • 2004年 慶應義塾大学 医学博士号 取得
  • 2005年 慶應義塾大学 皮膚科学教室 助手
  • 2008年 ヒロ皮フ形成クリニック 開業
  • 2009年 医療法人社団福美会 理事長
  • 2015年 医療法人社団福美会 理事

資格・所属

  • CAPラボディレクター
  • 日本皮膚科学会 皮膚科専門医
  • 日本医師会 産業医
  • 東京衛生検査所 指導監督医

発信・関連リンク

この記事は、 ヒロクリニックNIPPTの編集・監修体制 にもとづき、資格を持つ医師が内容を確認しています。

医師監修 監修日：2024年9月4日

堤 修一 （つつみ しゅういち）

医師・医学博士 ／ ヒロクリニック博多駅前院 院長

略歴

  • 1993年 東京大学医学部医学科 卒業
  • 2016〜2019年 東京大学先端科学技術研究センター 准教授

発信・関連リンク

この記事は、 ヒロクリニックNIPPTの編集・監修体制 にもとづき、資格を持つ医師が内容を確認しています。

参考文献

  1. Lo YM, Corbetta N, Chamberlain PF, Rai V, Sargent IL, Redman CW, et al. Presence of fetal DNA in maternal plasma and serum. Lancet. 1997 Aug 16;350(9076):485-7.
  2. Lo YM, Zhang J, Liew CT, Lau TK, Sargent IL, Harris Colgrave H, et al. Rapid clearance of fetal DNA from maternal plasma. Am J Hum Genet. 1999 Jan;64(1):218-24.
  3. Akolekar R, Jani J, Jefferson B, Castro L, Gomez-Rodriguez G, Prefumo F, et al. Procedure-related risk of miscarriage following amniocentesis and chorionic villus sampling: a systematic review and meta-analysis. Ultrasound Obstet Gynecol. 2015 Jan;45(1):16-26.

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Supervisor of the article

Dr. Hiroshi Oka

Director of CAP Laboratory

Graduated from Keio University, Faculty of Medicine

Doctor of Medicine

Medical Doctor