Short Tandem Repeat DNA
Internet DataBase

NIST Standard Reference Database SRD 130        [Recent Updates on 03/31/2023]

Serving the forensic DNA and human identity testing communities for 20 years...These data are intended to benefit research and application of short tandem repeat DNA markers to human identity testing. The authors are solely responsible for the information herein.

*Partial support for the design and maintenance of this website was previously provided by The National Institute of Justice through the NIST Forensic Science Program Office.*

General Information  

• Purpose of STRBase/NAR 2001 Paper describing STRBase/Overview Presentation

• Publications and Presentations from NIST Human Identity Project Team  

• NIJ-Funded Projects

• Training Materials

• Links to other web sites

• Glossary of commonly used terms

Forensic STR Information 

• STRs101: Brief Introduction to STRs

• Core Loci: FBI CODIS Core STR Loci and European Core Loci

• STR Fact Sheets (observed alleles and PCR product sizes)

• Multiplex STR kits

• Sequence Information (annotated)

• Variant Allele Reports 

• Tri-Allelic Patterns

• Mutation Rates for Common Loci

• Published PCR primers

• Y-chromosome STRs

• Low-template DNA Information

• Mixture Interpretation

• Kinship Analysis

• miniSTRs (short amplicons)

• Null Alleles - discordance observed between STR kits

• STR Reference List - now 3687 references 

Other DNA Marker Information and Non-Human DNA Resources

• Amelogenin information

• Sex-typing markers

• Forensic SNP Information

• Mitochondrial DNA (mtDNA)

• Cat STR Information

• Dog STR Information

• Cattle STR Information

• Horse STR Information

Lab Resources and Tools

• Addresses for scientists working with STRs 

• Training Materials

• STR Allele Sequencing

• Population data

• Data from NIST U.S. Population Samples

• NIST-Developed Software including AutoDimer, mixSTR, and Multiplex_QA

• NIST Standard Reference Material for PCR-Based Testing

• New STR Markers under Development at NIST

• Chromosomal Locations

• DNA Advisory Board Quality Assurance Standards

• Interlaboratory Studies              

• NIST Mixture 2005 Interlab Study MIX05 Data

• NIST Mixture 2013 Interlab Study MIX13 Data

• Validation information

• DNA Quantitation - SRM 2372

• Technology for resolving STR alleles

Applications for STR Typing in Human Identity Testing and DNA Diagnostics

• Forensic DNA Casework

• DNA Databases

• Mass Disasters

• Missing Persons

• Military Casualties

• Parentage and Kinship Testing: paternity testing, immigration issues, inheritance claims

• Genetic Genealogy & Answering Historical Questions

• Authenticating Human Cell Lines

• Detecting Genetic Chimeras

• Monitoring Transplants

• Monitoring Needle Sharing

• Detecting Cancer Tumors

• Mapping Genetic Diseases

• Examining Human Population Diversity

Frequently updated information.

*Last updated 03/31/2023 [see recent updates]