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STR Data Analysis and Interpretation for Forensic Analysts

GeneScan®

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GeneScan®
National Institute of Justice (NIJ) (see reuse policy).

GeneScan® is a sophisticated software program that converts raw data to analyzed data through the application of a size standard, a matrix file, and specific parameter settings.

GeneScan® software sizes peaks using the internal size standard added to the sample prior to separation, as shown below.

Graphic of GeneScan Sizing Peaks
National Institute of Justice (NIJ) (see reuse policy).

While samples are being processed by the genetic analyzer, sample files (.fsa) are generated during the data collection process. These files are then analyzed by the GeneScan® analysis software. There are five vital pieces of information in the sample file that are used and displayed during GeneScan® data analysis: (select the names below to see an example screen.)

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