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  • Title: Development of an Alu-based, real-time PCR method for quantitation of human DNA in forensic samples.
    Author: Nicklas JA, Buel E.
    Journal: J Forensic Sci; 2003 Sep; 48(5):936-44. PubMed ID: 14535658.
    Abstract:
    Determining the amount of human DNA extracted from a crime scene sample is an important step in DNA profiling. The forensic community relies almost entirely upon a technique (slot blot) to quantitate human DNA that is imprecise, time consuming, and labor intensive. We have previously described a method for quantitation of human DNA based on PCR amplification of a repetitive Alu sequence that uses a fluorescence plate reader. This manuscript describes and validates a variation of this assay using real-time PCR and SYBR Green I for quantitation. The advantages of the real-time assay over the plate reader assay are: reduced hands-on time, lower assay cost, and a greater dynamic range. The main disadvantage is the cost of the real-time instrument. However, for those forensic laboratories with access to a real-time instrument, this Alu-based assay has a dynamic range of 16 ng to 1 pg, is sensitive, specific, fast, quantitative, and uses only 2 microL of sample.
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