Background <p>The Investigator Argus Y-28 QS Kit is a 27-locus, six-dye multiplex, which includes six rapidly mutating Short Tandem Repeats (RM Y-STRs).</p> Methods <p>A new text file containing the optimized panel and bin sets for GeneMapper ID-X Software v1.6 has been prepared. In addition, an internal validation study was conducted on the Investigator Argus Y-28 QS kit using the SeqStudio™ Genetic Analyzer for HID.</p> Results <p>The full results of that study are presented here, including data on precision, sensitivity, reproducibility, stutter determination, and reduction volume analysis. A concordance study and three case reports are documented. Finally, the kit was successfully used to conduct a proficiency test.</p> Conclusions <p>The obtained findings achieved a satisfactory performance of the Investigator Argus Y-28 QS Kit on the SeqStudio™ Genetic Analyzer for HID.</p>