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NCJ Number: 202213 Find in a Library
Title: Second Chance: Guidelines on Conducting DNA Analysis of Latent Prints
Journal: Evidence Technology Magazine  Volume:1  Issue:2  Dated:July-August 2003  Pages:33-35
Author(s): Michael W. Weissberg; Amy M. Ruggles
Date Published: July 2003
Page Count: 3
Type: Instructional Material
Format: Article
Language: English
Country: United States of America
Annotation: This article explains how latent fingerprints can be the source for suspect identification through DNA analysis as well fingerprint analysis.
Abstract: Two common types of fingerprint sources submitted for DNA analysis are from sweaty or bloody latent fingerprints. The DNA provided through a sweaty handprint is from cells sloughed off during contact with a surface. In a bloody fingerprint, the DNA comes from the white blood cells. In the case of bloody fingerprints, however, it is important to be aware that the primary source of DNA being obtained is from the blood source and not from any sloughed-off cells of the individual who left the fingerprint. The amount of the sample is important in determining whether there is sufficient DNA to obtain a profile. Due to the large number of white blood cells, blood has a high concentration of DNA; therefore, an area the size of the head of a pin is usually sufficient to obtain a profile. Priority should first be given to the lifting and photographing of the fingerprint. Areas that are deemed not to be of evidentiary value by the latent print examiner can then be swabbed and transferred to the forensic-biology section of the crime lab for DNA analysis. The dual use of both fingerprint and DNA identification technologies provides the investigator with two means of identifying an unknown subject.
Main Term(s): Police policies and procedures
Index Term(s): Blood/body fluid analysis; DNA fingerprinting; Fingerprints; Investigative techniques; Latent fingerprints; Suspect identification
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