DNA elimination database is almost used in every forensic lab. Once the DNA of a trace matches with the DNA of the forensic operator, the lab has the right to eliminate its profile. I am wondering to which extent the lab could use such authority ignoring any possible link between the crime and the operator...
You mentioned a very important issue. Essentially, the presence of operator's DNA on evidence is a serious problem. If the sample is sufficient, the sterility should be restored and the sample should be re-run, if not possible, operator's DNA profile which is thought to be contaminated, should be shared with the judicial authorities after elimination. Quality standards require this. For more information, please refer to the Quality Assurance section of Butler's Fundamentals of Forensic DNA Typing.
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