In Gunshot Residue Testing (GSR), the most effective test to determine whether or not the subject handled a firearm is the:

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The Atomic Absorption with Scanning Electronic Microscope (SEM) is the most effective test for Gunshot Residue Testing (GSR) because it allows for the detection and analysis of microscopic particles that are characteristic of gunshot residue, providing both qualitative and quantitative data about the elements present. This method is highly sensitive and specific for identifying the unique elemental composition of GSR.

In Gunshot Residue Testing (GSR), the Most Effective Test to Determine