1. Introduction
Forensic analysis of human DNA (nuclear and mitochondrial) in
forensic samples can be a challenging task. Factors like degradation
and/or small amounts of DNA can impossibility the analysis due to
the lack of quality material to use in the assays [1,2]. The
quantification after DNA extraction it is an important step, which
provides the information about the amount of DNA present in
unknown samples. This data can be used successfully to obtain
better quality results preserving the sample for further analysis
[3,4].
In this study, the quantification by real-time PCR of human DNA
was used to provide information about the amount of material
present in different forensic samples (blood, buccal swabs and
hair). The quantification data was used to test different protocols in
order to get the best outcomes ensuring the competence of the
assays carried out in forensic samples.
Quantification of nuclear DNA (ncDNA) and mitochondrial DNA
(mtDNA) was performed in 68 samples (blood samples, buccal
swabs and hairs). Additionally, 12 different concentrations of
control DNA K562 (Promega), in a range of 30 ng/mL–0.0025 ng/mL,
were also quantified. The quantification assays for ncDNA and