The study found that a seven Y-STR locus panel revealed higher diversity levels among individuals in Finland than the substantially larger commercial multiplexes commonly in use. The study was conducted to evaluate the ability to increase the forensic usability of Y-chromosomal data in Finland. Previous research has shown that in Finland, the forensic use of Y-chromosomal markers has been hampered by the reduced diversity and geographical subdivision in the country's population. In order to increase the usability of Finland's Y-chromosomal data, the study evaluated the diversity at seven additional Y-STRs. Study results show that the Y-STR data together with the additional seven Y-STR panels had substantially higher discrimination capacity and lower levels of geographical structure among the Finnish population. These results indicate the ease with which this additional panel could be incorporated into commercial Y-STR kits. Figure, tables, and references