The most reliable way to confirm whether a child is yours or not is to carry out a DNA paternity test.This test is very accurate and can clearly resolve medical questions.The basic process of DNA paternity testing is explained below:

DNA paternity test procedure.

Sampling:.

A DNA sample is taken from the subject (usually the child, the suspected father and, if possible, the mother).The most common method of collection is using a cheek swab, which is collected non-invasively from the oral cavity.

DNA analysis.

The sample is sent to a specialized laboratory where the DNA is extracted and analysed for specific genetic markers. Genetic information that would otherwise be shared between parents and children is compared to scientifically determine whether a parent-child relationship exists.

Getting results:.

After the analysis, the results are provided in a report.The report gives the probability of the existence of a parent-child relationship as a percentage, usually 99.99% or more, and if the father is identified, the person is determined to be the biological father.

legal procedure

Legally admissible paternity tests:.
Where there is a need to prove a parent-child relationship in relation to a legal matter, a legally valid paternity test must be carried out in accordance with specific protocols.This includes procedures to maintain a chain of custody, which demonstrates that the sample has been properly handled throughout the entire testing process.

Non-legal procedure

Personal paternity assessment kits:.
If legal proof is not required, tests can be easily carried out at home using commercially available personal paternity kits.This method is private and easy, but cannot be used as legal proof.

As paternity assessments involve emotional issues, it is important that there is adequate communication between family members before the test is conducted. Professional counselling can also be helpful for emotional support.

医師監修監修日：2024年9月10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10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

プロフィール詳細

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

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.
Jeffreys AJ, Wilson V, Thein SL. Individual-specific 'fingerprints' of human DNA. Nature. 1985 Jul 4-10;316(6023):76-9.
Chu T, Bunce K, Hogge WA, Peters DG. Noninvasive prenatal paternity testing using maternal plasma. Prenat Diagn. 2012 Nov;32(11):1017-21.
Wagner J, Džehverović M, Bujger A, Sarajlić N, Marjanović D. Non-invasive prenatal paternity testing (NIPPT): Review of methods, tools, and accuracy. Forensic Sci Int Genet. 2020 Jul;47:102293.
Hall AL, Ramos CT, Sharaf R, Reinke CH, Stephenson TL, Guffey S, et al. Noninvasive prenatal paternity testing. Genetics in Medicine. 2013;15(11):e2.