US Y-STR Database

Release: 2.6 | Last Updated: 01/03/2012

Mixture Analysis Tools

The Mixture Analysis Tools are provided as a service to the forensic community. NCFS has not performed extensive validation of these tools and therefore the presence of a tool does not necessarily imply the endorsement of the method by NCFS. The software tools compute the possible haplotype contributors to a forensic casework Y-STR mixture and provide a count of how many times these haplotypes are found in the Database.

Prior to use in any criminal and/or civil case matter, users will need to conduct their own validation of the software and/or independently confirm the results on a case-by-case basis. Instructions for use are included in each program. Click the links below to open the desired program and enable macros. The California Department of Justice mixture tool queries only full Yfiler haplotypes within the Database, Release 2.6. The Harris County mixture tool queries all samples within the Database, Release 2.6.