NORTHEASTERN ILLINOIS REGIONAL CRIME LABORATORY

To Provide Accurate, Objective and Timely Forensic Services

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Biology/DNA

The Forensic Biology section of NIRCL performs serological and DNA analyses of physiological fluids for the purpose of identification and individualization. The type of material typically examined includes, but is not limited to, blood, semen, and saliva collected at crime scenes and from articles of physical evidence. These types of physiological fluids are frequently generated during the commission of violent crimes such as homicides, rapes, assaults, and hit and run fatalities.

Analysis:

The Forensic Biology section performs both STR (Short Tandem Repeat) and Y- STR analysis. STRs offer the advantage of short analysis time, a high degree of discrimination and the ability to look at small and degraded samples of DNA. Samples such as small as skin from under the nails of a victim can be compared to possible contributors. Y- STRs offer the advantage of only looking at the male DNA contribution to a mixture of DNA contributors.

northeastern illinois regional crime laboratory

vernon hills, il 60061

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