Combined Deoxyribonucleic Acid (DNA) Index System (CODIS)
The FBI maintains the largest DNA repository in the world, the National DNA Index System (NDIS), which contains more than 9,812,200 offender profiles, 1,181,300 arrestee profiles, and 441,200 forensic profiles as of July 2012. NDIS facilitates the exchange and comparison of DNA profiles at the national level. It is the highest of three tiers supported by CODIS. CODIS is an automated DNA information processing and telecommunications system which has produced more than 185,000 hits, assisting in more than 177,500 law enforcement investigations as of July 2012. CODIS blends forensic science and computer technology into an effective tool for crime solving. DNA analysis is increasingly used to successfully solve crimes and identify missing persons. For additional information please visit the Laboratory Division's CODIS web page at http://www.fbi.gov/about-us/lab/codis.