https://padlet.com/imanilee2399/13om5blyvn6mn3tt Biometric Analysis en-us 2021-08-25 01:44:30 UTC 2026-02-18 22:43:46 UTC hello@padlet.com imanilee2399 https://padlet.com/imanilee2399/13om5blyvn6mn3tt/wish/1694933635 The FBI's biometric analysis services and tools include the combined DNA Index System (CODIS), DNA examinations and profiles, and latent print examinations and training. ]]> 2021-08-25 02:10:15 UTC https://padlet.com/imanilee2399/13om5blyvn6mn3tt/wish/1694933635 imanilee2399 https://padlet.com/imanilee2399/13om5blyvn6mn3tt/wish/1695088023 The Combined DNA Index System (CODIS) allows labs to exchange and compare DNA profiles to link serial violent crimes to each other and to known offenders. CODIS generates investigative leads in cases where biological evidence is recovered from the crime scene. Matches made among profiles can link crime scenes together, possibly identifying serial offenders. Based upon a match, jurisdictions can coordinate their investigations and share the leads they developed independently. Matches made between the forensic and offender indexes provide investigators with the possible identity of perpetrators. The CODIS unit, made up of Program managers, forensics system program managers, biologists, auditors, program analysts, and paralegal specialists manage the CODIS and NDIS  (National DNA Index System) and is responsible for providing and supporting the CODIS program to federal, state and local crime labs in the US and some international crime labs. This way they are able to exchange and compare forensic DNA.]]> 2021-08-25 03:04:03 UTC https://padlet.com/imanilee2399/13om5blyvn6mn3tt/wish/1695088023 imanilee2399 https://padlet.com/imanilee2399/13om5blyvn6mn3tt/wish/1695156376 The DCU (DNA Casework) provides forensic DNA examinations to the FBI and other constituted law enforcement agencies to help in solving criminal, missing persons and intelligence cases through evidence testing. They do this by using forensic serological, mitochondrial DNA, and nuclear DNA methodologies. Because DNA analysis can occur in body fluid stains and other biological tissues these DNA testing results can be obtained form evidence samples and can be compared to DNA from reference samples collected from known persons. (nDNA) Nuclear DNA is usually analized in evidence containing body fluids, skin cells, bones, and hairs that have tissue at their root ends. The DCU uses serological testing to detect and characterize body fluids such as blood and semen on items of evidence. Mitochondrial DNA testing is a type of DNA testing can be useful on evidence items such as naturally shed hairs, hair fragments, bones, and teeth. DNA results from evidence relating to criminal cases and missing persons will be uploaded into the National DNA Index System (NDIS). The FBI will be a centralized testing laboratory for SAKs, (rape kits), to be submitted from the nation’s law enforcement agencies and public forensic laboratories. These kits can be used to collect and test for bodily fluids.]]> 2021-08-25 03:29:23 UTC https://padlet.com/imanilee2399/13om5blyvn6mn3tt/wish/1695156376 imanilee2399 https://padlet.com/imanilee2399/13om5blyvn6mn3tt/wish/1695203712 The federal DNA database serves the forensic community by helping investigations through hit confirmations against people whose profiles are in the NDIS (National DNA Index System). Agencies can submit blood or buccal samples from individuals that are convicted of, arrest for, or facing charges for federal crimes. These individual are required to do so by law. A DNA profile for each individual is uploaded to the NDIS, which is part of the Combined DNA Index System (CODIS). The DNA profiles are then searched against unknown forensic profiles from crime scenes across the country. If there is a match the casework lab can request FDDU to confirm the offenders sample DNA profile. When the profile is confirmed the FDDU releases the subjects personal identification back to the lab. This information can be given to investigators to help arrest the perpetrator. A team of laboratory scientists apply robotic processing stations and high-throughput instrumentation to generate DNA typing results from samples within days of sample acceptance. A team of reporting scientists interprets the resulting DNA profiles, approve data for upload, and author correspondence to casework laboratories regarding database associations confirmed between FDDU specimen DNA profiles and corresponding evidentiary DNA profiles.]]> 2021-08-25 03:49:40 UTC https://padlet.com/imanilee2399/13om5blyvn6mn3tt/wish/1695203712 imanilee2399 https://padlet.com/imanilee2399/13om5blyvn6mn3tt/wish/1695224610 The Latent Print Unit (LPU) Develops latent prints on submitted evidence using state of the art equipment and chemical processing techniques. They will search for images of latent prints against millions of known reference holdings within the Next Generation identification System. They perform friction ridge analysis to make biometric associations to persons of interest and generate reports based on the results of completed friction ridge examinations and provide expert testimony on reported findings in legal proceedings. LPU provide record check reports and testimony for local, state, or federal law enforcement agencies in connection with a court date and help in assisting law enforcement agencies across the nation on cold cases. They respond to legal and admissibility issues related to latent print testimony, the science of friction ridge analysis, and other legal matters. They conduct traditional latent print examinations implemented by specially-trained Hazardous Evidence Analysis Team members on evidence contaminated with hazardous chemical, biological, radiological and nuclear materials. LPU also provides humanitarian support for disaster victim identification in mass casualty scenarios, as well as resources and assistance to obtain high quality postmortem fingerprints of unknown deceased individuals. They offer training to law enforcement agencies and partners both domestically and internationally on various latent print topics to include testimony, processing crime scenes, processing evidence, and different methods to obtain high quality fingerprints and conduct research and validation on numerous latent print topics relevant to recent trends in the latent print community.

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