DNA TYPING OF BLOODSTAIN: A CASEWORK OF MORTAL CRASH

Since 1997 the analysis of DNA recovered from handled objects, or trace DNA has become routine and is frequently demanded from crime scene examination. However, this analysis often produces unpredictable results. The factor affecting the recovery of full profiles are numerous, and as demonstrated in casework and research, retrieving useable profiles from trace DNA exhibits is not guaranteed. There are numerous factors that affect the rate of recovery of full profiles, such as the ability of the individual to shed cells, the substrate surface, the time of contact and delay until analysis, and the environment. In addition to these external conditions, there are many varying methods used to co…