Development and forensic validation of human genomic DNA quantification kit

  • Jeongyong Kim
  • Ju Yeon Jung
  • So Yeun Kwon
  • Pilwon Kang
  • Hyunchul Park
  • Ki min Seong
  • Tae ue Kim
  • Hyeon Kyu Yoon
  • Si-Keun LimEmail author
Method Paper


DNA quantification is an essential step for successful multiplex short tandem repeat (STR) polymerase chain reactions (PCR), which are used for confirming identities using human genomic DNA. The new DNA quantification kit, named the National Forensic Service Quantification (NFSQ) kit, simultaneously provides total human DNA concentration, human male DNA concentration, and a DNA degradation index (DI) using multiplex TaqMan fluorescent probes. The NFSQ was validated according to developmental validation guidelines from the SWGDAM and MIQE. NFSQ detected up to 0.00128 ng/μL and could detect male DNA up to a 1:8000 ratio of male to female DNA. In PCR inhibitor tests, NFSQ could measure DNA at a concentration of 200 ng/μL of humic acid and 600 μM of hematin. The NFSQ kit showed a DI value trend similar to other qPCR kits. In the reproducibility study, the coefficient of variation of the NFSQ kit was within 10%. The quantitative results of the casework samples obtained using the NFSQ kit were consistent with the STR interpretation results. The NFSQ kit can be useful in the human identification process, as it has detection capabilities similar to those of other comparable quantification kits.


DNA quantification Forensic science Real-time PCR Short tandem repeat 


Funding information

This work was supported by the Korean government and by a grant (NFS2019DNA02) from the Forensic Research program of the National Forensic Service (NFS).

Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.

Ethical approval

All procedures performed in studies involving human participants were in accordance with the ethical standards by Institutional Review Board (IRB) of National Forensic Service (Approval No. 906-170118-BR-003-02).


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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2019

Authors and Affiliations

  1. 1.Forensic DNA Division, National Forensic ServiceWonjuRepublic of Korea
  2. 2.Department of Biomedical Laboratory Science, College of Health SciencesYonsei UniversityWonjuRepublic of Korea
  3. 3.JS Biotech, BI Center 6420Kyungbok Univ. 425 Jinjeop-eupNamyangju-siRepublic of Korea
  4. 4.Department of Forensic SciencesGraduate School of Sungkyunkwan UniversitySuwonRepublic of Korea

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