The Quantifiler Duo kit from Applied Biosystems simultaneously provides quantitative and qualitative assessment of total human and human male DNA, enabling forensic laboratories to obtain more information in a single quantification reaction. This guides STR chemistry selection while streamlining workflow and increasing downstream analysis success rates. When combined with the AmpF?"STR PCR Amplification Kits, including Yfiler and MiniFiler, the forensic DNA workflow becomes fully integrated to maximize recovery of interpretable STR profiles from sexual assault and challenging samples.