Abstract
The presence of background DNA in forensic laboratories is potentially a significant contamination risk to criminal investigations. As part of the laboratory's Environmental Monitoring (EM) program, a preliminary investigation of three brands of laboratory gloves was undertaken to determine the levels of human DNA present on unused gloves from closed and open boxes as well as the origin of stains observed on gloves. The study revealed the presence of DNA on a number of the gloves from closed boxes as well as on some gloves from open boxes. Some observed staining on gloves was indicative of rust. Regular assessment of the presence of human DNA on unused gloves is recommended. In addition, using only certified DNA-free gloves should be considered.
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