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Development and validation of a rapid PCR method for the PowerPlex® 16 HS system for forensic DNA identification

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Abstract

Currently, the amplification step of most forensic DNA profiling systems takes 3–4 h to complete. A decrease in the amplification time would allow for increased laboratory throughput, which may help reduce backlog when is due to limited cycling capacity. By using the SpeedSTAR™ HS Polymerase (Takara Bio, Otsu, Japan) in combination with the Veriti® (Applied Biosystems, Foster City, CA, USA) rapid thermal cycler, the amplification time for the PowerPlex® 16 HS (Promega, Madison, WI, USA) kit was reduced by 66 % (1 h). The sensitivity of this fast method was comparable to the standard system (0.13 ng). Although this rapid protocol showed an increase in average stutter ratios (2.8 %) and a decrease in average peak height ratios (7 %) across all loci when compared with standard conditions, it was able to consistently generate reliable DNA profiles. The results of this study indicate that the rapid protocol could be implemented in forensic laboratories with an optimal range of 0.25–2 ng of input DNA using appropriate analytical interpretation guidelines.

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Authors and Affiliations

  1. Department of Forensic Science, College of Criminal Justice, Sam Houston State University, Chemistry and Forensic Science Bldg., 1003 Bowers Blvd., Office 221C, Huntsville, TX, 77340-2525, USA

    James White, Sheree Hughes-Stamm & David Gangitano

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  1. James White
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  2. Sheree Hughes-Stamm
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  3. David Gangitano
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Correspondence to David Gangitano.

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White, J., Hughes-Stamm, S. & Gangitano, D. Development and validation of a rapid PCR method for the PowerPlex® 16 HS system for forensic DNA identification. Int J Legal Med 129, 715–723 (2015). https://doi.org/10.1007/s00414-014-1102-1

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  • DOI: https://doi.org/10.1007/s00414-014-1102-1

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