The detection of group-specific component from urine samples.

Area of Science:

• Forensic Science
• Biochemistry
• Genetics

Background:

• Group-specific component (Gc) detection is crucial in forensic analysis.
• Adulterated urine samples pose challenges in drug screening and donor identification.
• Existing methods for urine analysis are limited.

Purpose of the Study:

• To establish a method for detecting group-specific component (Gc) in urine samples.
• To enhance forensic capabilities for individual identification using urine.
• To address the issue of sample adulteration in drug testing programs.

Main Methods:

• Urine samples were concentrated and subjected to ultrathin polyacrylamide gel electrophoresis.
• Isoelectric focusing was performed for 150 minutes to separate Gc phenotypes.
• Nitrocellulose membrane blotting was employed for the detection of Gc bands.

Main Results:

• The method successfully separated samples into three common Gc phenotypes.
• Gc detection in urine samples was feasible and reliable.
• Urine samples remained readable for Gc typing after 6 months of refrigerated storage.

Conclusions:

• This technique provides a valuable new tool for forensic laboratories.
• Gc detection in urine enhances the ability to identify sample donors.
• The method offers a reliable approach for analyzing body fluids previously yielding limited information.